Invisibly
adv. 看不见地, 看不出地
📖 牛津释义
invisibly
adv.
🗣️ 情景例句
Bye-bye.
再见。
It's hard to say.
很难说。
but it is of a kind that, if he meets it, he can readily understand and deal with.
但如果有这种情况，露营者也容易理解，知道如何对付，