Bowdrill
n. (原始人用来取火或钻洞的)弓钻
🗣️ 情景例句
Radiation exposure can damage your genes and make them vulnerable to mutation.
辐射会破坏你的基因组织，使它们突变。
How long is Jones Boulevard?
琼斯大街有多长？
The child learning to see, first distinguishes only two-dimensional shape;
正在学看东西的儿童起初只会分辨二维形态，