Sawtoothed
锯齿形的
🗣️ 情景例句
Do you want manual or automatic transmission?
你的汽车想配备一个手动挡还是自动挡？
They jumped at the unexpected noise.
他们因突如其来的声音吓得跳了起来。
Recent scientific evidence seems to indicate that this assumption is incorrect.
但近期科学研究发现，好像这种假设是不正确的。