I. strain2 [streın] 动词 不及物动词
II. strain2 [streın] 动词 trans
| I | strain |
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| you | strain |
| he/she/it | strains |
| we | strain |
| you | strain |
| they | strain |
| I | strained |
|---|---|
| you | strained |
| he/she/it | strained |
| we | strained |
| you | strained |
| they | strained |
| I | have | strained |
|---|---|---|
| you | have | strained |
| he/she/it | has | strained |
| we | have | strained |
| you | have | strained |
| they | have | strained |
| I | had | strained |
|---|---|---|
| you | had | strained |
| he/she/it | had | strained |
| we | had | strained |
| you | had | strained |
| they | had | strained |
单语范例（未经PONS编辑处理）
Similarly, a significant cause of eye strain for computer users is reflected light from poorly placed light fixtures on glass screens.
en.wikipedia.org The program is free software, inspired by the proprietary f.lux, and can be used to reduce eye strain as well as insomnia and delayed sleep phase syndrome.
en.wikipedia.org Symptoms of strabismus include diplopia and/or eye strain.
en.wikipedia.org To minimize the possibility of eye strain, the ratio of luminance should decrease between merchandise selling areas.
en.wikipedia.org Proper rest to the eye and its muscles is recommended to relieve the associated eye strain.
en.wikipedia.org