然而，单一种植的人工纯林使鸟类和其他物种的栖息地减小，因此也缩减了人们本能够从生物天然播种过程中的获取的好处。

Monoculture forests reduce the range of habitats for birds and other wildlife and thereby reduce the environmental and economic benefits people derive from wildlife seed-dispersal.

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但现行的三系杂交水稻制种技术，自播种至收获完全依靠人工操作，工序繁杂。

Now the process of the hybrid seed production mainly relies on manual, the working procedure is very burdensome.

youdao

但现行的三系杂交水稻制种技术，自播种至收获完全依靠人工操作，工序繁杂。

Now the process of the hybrid seed production mainly relies on manual, the working procedure is very burdensome.

youdao