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在《PONS词典》中的词汇

I. firm up 动词 trans 经济, 金融

to firm sth up
to firm sth up

II. firm up 动词 不及物动词

firm up negotiations
firm up date
Present
Ifirm up
youfirm up
he/she/itfirms up
wefirm up
youfirm up
theyfirm up
Past
Ifirmed up
youfirmed up
he/she/itfirmed up
wefirmed up
youfirmed up
theyfirmed up
Present Perfect
Ihavefirmed up
youhavefirmed up
he/she/ithasfirmed up
wehavefirmed up
youhavefirmed up
theyhavefirmed up
Past Perfect
Ihadfirmed up
youhadfirmed up
he/she/ithadfirmed up
wehadfirmed up
youhadfirmed up
theyhadfirmed up