Unobservable

a. 難以察覺的;注意不到的;不可見的

? 同義詞

??? 情景例句

He has had various experiences in his life.
他的生活經驗豐富。
Books,like friends,should be few and well chosen.
書籍如朋友,宜少宜精選。
For them this is a major operation which involves considerable planning.
看戲在他們是件大事,需要精心計劃。
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?? 更多 U 開頭的單詞

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