1.hit a nerve 觸及到某人的神經/痛處

I am afraid you have hit a nerve when you mention his dead wife, and his face darkened.

恐怕你提到他死去的妻子的時候觸及了他的傷心事，所以他的臉色陰沉了下來l5yR7Ob,frT_=gHt8O_。

2.in stock 存貨

As you know, we have been in urgent need of these items as we have only a few in stock.

如您所知，由于本公司存貨已經不多，所以對此項貨物的需求極為迫切X*]gofb1gp)Btn0z_ly。

3.as of 截至

As of the beginning of September, the new rules have come into effect, at least in Taipei.

截至九月初，這些新法規至少已經在臺北生效了M81HoI]vc#m。

4.of choice 首選

But, for now, he seems to be the candidate of choice among Arabs.

但是，目前，奧巴馬似乎是阿拉伯世界最為推崇的候選人Qd7-ti-JH%2[9ap2vX0。