Undersetting
v. 底流, 暗流, 与海面流向相反的潜流( underset的现在分词 )
🗣️ 情景例句
Now let's head off for the city and the university club.
现在让我们进城去， 到大学俱乐部。
What's the purpose of your visit?
你旅行的目的是什么？
German is a more difficult language than English is.
德语比英语难学。