单词学习：acerb 形容词
acerb
/əˈsɜːrb/
酸涩的；尖刻的，严厉的
The critic's acerb review of the play was as sharp as the taste of an unripe persimmon, much like the comments Mr. Gu makes when grading our essays.
那位评论家对这部戏剧尖刻的评论，就像未成熟柿子的味道一样酸涩，颇似顾老师批改我们作文时给出的评语。
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