1.酸的（形容词）；2.尖刻的（形容词）

1. (adjective) Unpleasantly sharp and stinging in taste or smell; bitter.

2. (adjective) Describing sharp and funny but often cruel spoken or written comments.

EXAMPLE 1: The cheap wine had a strongly acerbic flavor, and no one enjoyed drinking it.

这种低价葡萄酒有一种强烈的酸味，谁也不喜欢喝。

EXAMPLE 2: My cynical old aunt often makes acerbic remarks about younger people in our family.

我的玩世不恭的老姨妈经常对我们家里的年轻人做出尖刻的评论。

双重标准

A situation in which moral standards and behavioral expectations for one group are quite different from that of another similar group.

EXAMPLE: My beautiful cousin argues with her conservative parents, accusing them of having a double standard because her younger brother is permitted to stay out late at night with his friends, however she cannot.

我的漂亮的堂妹与她保守的父母产生了争执，指责他们实行双重标准，允许她的弟弟跟朋友在外面玩到深夜，而她却不行。