Bookends
n. 挡书板；书夹；书挡（bookend的复数形式）
🗣️ 情景例句
I plan to get help
我打算争取
If I'm careful...
当心啊……
Letters will cost a little more, but they will certainly travel faster.
这样会稍微多花点钱，但肯定是快得多了。