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出版事项说明数据保护设置隐私范围
-wise
mejorar

http://www.pons.de/produkte/3-12-517841-X/（牛津大学出版社授权产品）

it would be hard to improve upon his translation
sería difícil mejorar su traducción
it would be hard to improve upon his translation
su traducción es difícil de mejorar
http://www.pons.de/produkte/3-12-517841-X/（牛津大学出版社授权产品）

upon [美 əˈpɑn, 英 əˈpɒn] 介词 书

1. upon (on):

she placed the cards upon the table
puso las cartas sobre la mesa
upon their arrival, they were shown to their room
a su llegada, se los condujo a su habitación
there are trains upon the hour, every hour
hay un tren por hora, a la hora en punto
acting upon his advice …
siguiendo sus consejos …
upon my word! veraltend
¡caramba!
upon -ing
al +  infin
upon entering the room
al entrar a la habitación

2. upon (indicating imminent or unexpected arrival):

to be upon sb, the enemy was upon us
teníamos al enemigo encima
winter is already upon us
ya estamos prácticamente en invierno

3. upon (indicating large numbers):

thousands upon thousands
miles y miles
I have sent letter upon letter
he mandado carta tras carta

I. improve [美 ɪmˈpruv, 英 ɪmˈpruːv] 动词 trans

1. improve:

improve design/results/product
mejorar
improve chances
aumentar
I want to improve my German
quiero mejorar mi alemán
that new hairstyle has improved her looks
ese nuevo peinado la favorece mucho
it improves your chances of promotion
aumenta tus posibilidades de ascenso
it improves your chances of promotion
te da más posibilidades de ascenso
to improve one's mind
cultivarse
to improve one's mind
culturizarse 谑

2. improve property/premises:

improve
hacer mejoras en

II. improve [美 ɪmˈpruv, 英 ɪmˈpruːv] 动词 不及物动词

improve situation/weather/work:
mejorar
improve chances:
aumentar
his health has improved
su salud ha mejorado
his health has improved
ha mejorado de salud
things can only improve
las cosas no pueden sino mejorar
let's hope the weather improves
esperemos que mejore el tiempo
she's improved since she's been living on her own
ha mejorado or está mejor desde que vive sola
her work has improved beyond all recognition
su trabajo ha mejorado increíblemente
he improves on acquaintance
cae mejor a medida que uno lo va conociendo
to improve with age/use
mejorar con el tiempo/uso
this cake improves with keeping
este pastel mejora si se lo guarda un tiempo

III. improve [美 ɪmˈpruv, 英 ɪmˈpruːv] 动词 refl

to improve oneself
superarse

在《PONS词典》中的词汇

upon [əˈpɒn, 美 -ˈpɑ:n] 介词 书

1. upon (on top of):

upon
sobre
upon
encima de

2. upon (around):

upon
en
a ring upon the finger
un anillo en el dedo

3. upon (hanging on):

to hang upon the wall
colgar en la pared

4. upon (at time of):

upon her arrival
a su llegada
upon this
a continuación
upon this
acto seguido

5. upon (long ago):

once upon a time
érase una vez

I. improve [ɪmˈpru:v] 动词 trans

improve
mejorar

II. improve [ɪmˈpru:v] 动词 不及物动词

1. improve:

improve
mejorar
improve (progress)
hacer progresos

2. improve price:

improve
subir
在《PONS词典》中的词汇

upon [ə·ˈpan] 介词 书

1. upon (on top of):

upon
sobre
upon
encima de

2. upon (around):

upon
en
a ring upon the finger
un anillo en el dedo

3. upon (hanging on):

to hang upon the wall
colgar en la pared

4. upon (at time of):

upon her arrival
a su llegada
upon this
a continuación
upon this
acto seguido

5. upon (long ago):

once upon a time
érase una vez

I. improve [ɪm·ˈpruv] 动词 trans

improve
mejorar

II. improve [ɪm·ˈpruv] 动词 不及物动词

1. improve:

improve
mejorar
improve (progress)
hacer progresos

2. improve price:

improve
subir
Present
Iimprove
youimprove
he/she/itimproves
weimprove
youimprove
theyimprove
Past
Iimproved
youimproved
he/she/itimproved
weimproved
youimproved
theyimproved
Present Perfect
Ihaveimproved
youhaveimproved
he/she/ithasimproved
wehaveimproved
youhaveimproved
theyhaveimproved
Past Perfect
Ihadimproved
youhadimproved
he/she/ithadimproved
wehadimproved
youhadimproved
theyhadimproved
See further verb tables

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单语范例（未经PONS编辑处理）

While there was widespread agreement the 1855 classification had flaws, a general view remained that it was impossible to improve upon it.
en.wikipedia.org
The campaign saw the team attempt to improve upon its abysmal 1962 record of 113.
en.wikipedia.org
They also failed to improve upon a 610 season in 2006.
en.wikipedia.org
They began the season hoping to improve upon their 62-20 output from the previous season.
en.wikipedia.org
They have been left as originally constructed and there are not any plans to improve upon them, because people are reluctant to tamper with the original shrine complex.
en.wikipedia.org

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