1) To act like that is foolish.
那样做是愚蠢的。
2) It is a stupidity to do that.
那样做是件蠢事。
3) This is silly !
这是愚蠢的！
4) It was foolish in the extreme.
那是愚蠢之极。
5) a senseless thing to do
做极愚蠢的事
6) The trouble with you is that you're stupid.
你的短处是愚蠢。
补充资料：那样
1.代词。指示程度﹑方式﹑性状等。
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