🗣️ 情景例句
Who has torn these pages out of the book?
谁撕掉书上的这几页？
To drop
掉下
The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin.
手术持续了4个多小时，非常难做，因为皮肤上覆盖着一层硬硬的树脂。