These toys are all made of plastics.
这些玩具都是塑料制的。
The squares can be made of plastics.
四方体可以用塑料做成。
There are a lot of plastics out there.
有很多种塑料。
这是用塑料制成的。
Many shoes nowadays are made of plastics.
现在许多鞋是用塑料制作的。
It is not made of steel, but of plastics.
这不是钢做成的，而是塑料做成的。
The application of plastics is on the increase.
塑料的应用正在增多。
At present, many things are made out of plastics.
现在许多东西都是用塑料制成的。
This is a typical problem in the recycling of plastics.
这是一个典型的问题，在回收的塑料。
I was told that some bikes are made of plastics instead of steel.
据说有些自行车使用塑料而不是用刚铁制成的。
I was told that some bikes are made of plastics in stead of steel.
有人告诉我，有些自行车是用塑料而不是用钢制作的。
Made of plastics the weight of this machine par decreased four times.
由于用塑料制造，这个机器部件的重量减轻了四分之三。
They would rather use machine parts of plastics than use those of metals.
他们宁可使用塑料机器零件，也不用金属机器零件。
The air permeability back board can be made of plastics or other materials.
透气背板可用塑料或其他材料制成。
It is a kind of plastics pipe of energy saving and environmental protection.
是一种节能、环保型的塑料管材。
It is known that powder materials have important effects on the application of plastics.
粉体材料在塑料中应用的重要作用无庸置疑。
She uses a camera along with three different kinds of light to find the plastics.
她用相机和三种不同的光源来寻找塑料。
Energy: The idea of recycling paper, glass, metal and plastics has become commonplace.
能源：回收纸张、玻璃、金属和塑料的想法越来越普遍。
A future source of such biodegradable plastics might even come from algae-derived oil.
这种未来材料——可生物降解的塑料也许就来自于藻类衍生的油中。
塑料是由什么制成的？
This is also a direction of effort for Chinese plastics processing industry.
这也将是中国塑料加工工业努力的方向。
These plastics can resist the action of acids.
这些塑料不受酸的腐蚀。
Look at what's inside this albatross of seabird, found dead, plastics filled its body.
看看这只被发现已经死亡的信天翁海鸟身体里面有些什么，它的身体中充满塑料。
Be this handbag make of leather or plastics?
这手提包是皮革做的还是塑料做的？
And as you know it is made of mainly steel and plastics .
此外，正如您所知道的，汽车主要是由钢和塑料制成的。
We can use plastics in place of wood or metal.
我们可用塑料来代替木材或金属。
We can use plastics in place of wood or metal.
我们可用塑料来代替木材或金属。
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