1.in doubt 存在疑問(wèn)；大成問(wèn)題

India's commitment to sezs is now in doubt.
印度政府對(duì)經(jīng)濟(jì)特區(qū)的承諾現(xiàn)在也值得懷疑。

The gravity of her crime is not in doubt.
她的罪行的嚴(yán)重性是毫無(wú)疑問(wèn)的。

2.guinea pig 豚鼠，天竺鼠；試驗(yàn)品，實(shí)驗(yàn)對(duì)象

You want to be a guinea pig man?
你愿意做我們的實(shí)驗(yàn)品嗎？

If your guinea pig isn't eating at all, then you should contact your vet right away.
如果你的豬豬不進(jìn)食，你就必須立即與獸醫(yī)聯(lián)系。

3.struggle to 斗爭(zhēng)

I struggle to see what russia will gain.
我很難看出俄羅斯從中能得到什么。

Chinese steelmakers could struggle to pass on these rates.
中國(guó)鋼鐵生產(chǎn)商可能難以將這些漲幅轉(zhuǎn)嫁出去。

4.on the other hand 在另一方面

Audio on the other hand, works just fine.
而另一方面，音樂(lè)播放就很好。

Ballet, on the other hand, is most often enjoyed live.
另一方面，芭蕾舞團(tuán)，是最經(jīng)常享受現(xiàn)場(chǎng)。