“无菌的”造句

尿液是无菌的。
Urine is sterile.

手术室应该是个无菌的环境.
An operating theatre should be a sterile environment.

生长中的胎儿是处于无菌的羊水中,羊水能避免碰撞和病菌.
A developing baby floats in sterile amniotic fluid , protected from bumps — and bugs.