Bookends
n. 挡书板；书夹；书挡（bookend的复数形式）
🗣️ 情景例句
I visited Japan on an observation tour of its industries.
我到日本观摩它的工业。
How've you been?
别来无恙？
When he woke up, he was still on the mattress.
他醒来时，仍然躺在床垫上。