They are made out of a number of materials including fiberglass, plastic and wood.
他们是做了一些材料，包括玻璃纤维，塑料和木材。
The aim is to reduce the number of plastic bottles in landfill sites.
公司的宗旨是减少垃圾填埋场上塑料瓶的数量。
Plastic is really a compound of a number of chemicals.
塑料其实是几种化学物质的复合物。
Plastic is really a compound of a number of chemicals.
塑料其实是几种化学物质的复合物。
应用推荐