Cementification
牙骨质形成
🗣️ 情景例句
I would hardly refer to junk mail as being literature.
我不会把那些垃圾邮件看成是文学。
After a while,we found a shady place under some poplar trees.
在一会儿以后，我们在一些白杨树下面发现了一块遮阴的地方。
no more than one or twofeet thick.
气垫只有一两英尺厚。