When you go to the shop and they give you a plastic bag, that one's " polythene" , a polythene bag.

当你去商店时， 他们会给你塑料袋，那“聚乙烯” ，聚乙烯袋。

We just use usual packing methods. As for T-shirts and ladies pajamas, we'll have each of them packed with a polythene wrapper, ready for the display window.

我们就用惯用的包装方法好了。至于T恤衫和女式睡衣，我们会用聚乙烯袋单件包装，这样方便做橱窗展示。

It's also a good idea, of course, to cover the pot with a polythene bag just to maintain the humidity and keep the moisture.

当然，用塑料袋覆盖花盆以保持湿度并保持水分也好主意。

This means covering the ground with clear polythene preferably, though black will do, and then removing the germinating weed seeds before you sow, so they don't compete with your crops.

这意味着最好用透明塑料膜覆盖地面，不过黑色塑料膜也行， 然后在播种前清除正在发芽的杂草种子，以避免它们与作物竞争。