🧩 词语组成解析
a. 有齿的, 锯齿状的, 齿状的\\n[化] 配位基
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
I'd like to buy some stamps for this letter.
我想买这封信的邮票。
I'm the luckiest person in my class.
我是我的班级中最幸运的人。
After his attempt, Campbell was disappointed to learn that his average speed had been 299 miles per hour.
比赛结束后，坎贝尔非常失望地得知他的平均时速是299英里。