Tacinvariant
互[相]切不变式
🗣️ 情景例句
Thank you for calling us.
谢谢你打电话给我们。
Hmm, I'm stoned.
哼，我是个老古板。
I hope this will lead to further business between us.
我希望这次交易将使我们之间的贸易得到进一步发展。