Pseudofossil
假化石
🗣️ 情景例句
Aren't you going to the aerobics class this morning?
今天上午你不是去上有氧运动课吗？
How long will you remain in the United States?
你将会在美国逗留多久？
He himself has done it lots of times!
他自己就已戒了很多次了！