🧩 词语组成解析
a. 锯齿状的\\n[医] 锯齿状的
leaf
[lif]
n. 叶子;页;叶状的结构;金属薄片;
vt.& vi. 翻书（报）;
vi. 生叶;
🗣️ 情景例句
The girl always wears a happy smile.
这女孩随时都面带快乐的微笑。
You can't take it back!
说话算话！
After he had put it on the floor, he promptly went to sleep again.
他把床垫往地板上一放，很快又睡着了。