A snail extrudes its horns.是什么意思？

A snail extrudes its horns.

一只蜗牛伸出它的触角.

snail

n. 蜗牛，慢性子；

例句
Each year, 280 thousand people die of schistosomiasis also know as bilharzia or snail fever.
每年, 有28万人死于血吸虫病,住血吸虫病或者是蜗牛热.

extrudes

v. 挤压出( extrude的第三人称单数 )，挤压成，突出，伸出；

例句
A snail extrudes its horns.
一只蜗牛伸出它的触角.

its

pron. (it的所有格形式)它的，厥；

例句
The government is to accelerate its privatisation programme.
政府将加快其私有化计划的进程。

horns

n. 角( horn的名词复数 )，号，角质，（蜗牛等的）触角；

例句
The poster showed a caricature of Hitler with a devil's horns and tail...
海报漫画中的希特勒长着魔鬼的犄角和尾巴。