🧩 词语组成解析
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
Who has torn these pages out of the book?
谁撕掉书上的这几页？
I told him last Tuesday.
我上个星期二告诉他。
The further off this solid obstruction, the longer time will elapse for the return of the echo.
固体障碍物越远。回声返回所用时间就越长。