| 例句 |
Plastic coated worktops are easy to keep clean.覆有塑料的厨房工作台容易保持清洁。New techniques for recycling plastics are being introduced.正在引进回收塑料的新技术。Badly corroded metal gutters and downpipes should be replaced by the plastic type.锈损严重的金属排水沟和下水管应该换成塑料的。Polymers are the base product of many plastics.聚合物是多种塑料的基础产物。What's that plastic thingy called?那个塑料的玩意儿是什么？ |