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a. 无法探究的, 不可理解的, 不可测知的
🗣️ 情景例句
I'm going to play with a group of friends.
我打算和朋友一起玩。
Coward!
胆小鬼！
I think you need a number 47. The bus stop is along that road, on the right.
我想你需乘47路车。