n. wingless usually flattened bloodsucking insect parasitic on warm-blooded animals
n. 虱子, 寄生虫
[医] 虱
1. The teacher found a louse in the student's hair.
老师在学生的头发里发现了一只虱子。
2. It is important to check for lice after summer camp.
夏令营后检查是否有虱子是很重要的。
3. Lice can spread quickly, so you should treat them as soon as possible.
虱子传播得很快，所以你应该尽快治疗。