英语语法分析

If perlite is reused, sterilization may be necessary.

如果珍珠岩是重复使用，消毒可能是必要的。

A good starting point is three parts mix to one part perlite.

可以试试用三份介质加一份珍珠岩混合。

Peat moss is well known for high porosity and perlite has a similar property.

泥炭是众所周知的高孔隙度和珍珠岩也有类似的财产。