🧩 词语组成解析
a. 顶端微凹的\\n[医] 微凹的, 微缺的(叶端)
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
He did it as a special favor.
他做这事算是特别照顾。
Why didn't you do it?
为什么你不做？
A long time ago, one of his ancestors who lived in Africa went into the forest to cut down a tree to make a drum.
很久以前，他那生活在非洲的祖先中有一人走进森林去砍树来做鼓。