Embolus
n. 栓子, 栓塞物\\n[医] 栓子
🗣️ 情景例句
I don't want to cut class.
我不想逃学。
He's a student,too.
他也是学生。
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）