Some goods and services cannot be imported, but the Labour required to produce them can be.
一些商品和服务不能进口，但是生产这些东西的劳动力可以进口。
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In addition, with almost half of its Labour force still in agriculture, China still has plenty of scope to lift productivity by moving surplus Labour into industry and services.
Barriers to the free flow of goods and services, Labour and capital are being pulled down around the world, aided by huge improvements in communications and transport.