fire-retardant造句

1、The law required apartment buildings to be of fire-retardant construction.
法律规定所有公寓房屋都应该是耐火的建筑物。

2、Plastics modified with fire-retardant have been the topic for recent years.
塑料的阻燃改性一直是近年来人们研究的热点。

3、Have the highest wood fire-retardant grade B1.
具有木质最高的防火等级B1。