Lawns are greening up in spring.

春天来了，草地慢慢绿起来了。

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Greening up the most traditional of Valentine's Day gifts is harder than you'd think, since most cut flowers are imported by plane at this time of year.

让这种最传统的情人节礼物环保起来可是比想象中要难，因为每年的这个时候，大多数的花都是空运进口的。

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It may also explain some of the greening that has swept down the mountain's south-eastern flank; water from higher up may be percolating through rock and soil.

它也可以解释山的东南坡自上而下的绿化过程：生成于较高地势的水可以通过岩石和土壤渗流下来。

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This refers to the "greening up" of everyday products so that they are as near to self-sufficient in terms of energy consumption as is possible.

BBC: NEWS | Science/Nature | Switching on to nanogeneration

Winding up the debate Economic Secretary Justine Greening said the bill was a "key step towards making payments which hadn't been paid under the last administration".

BBC: Equitable Life (Payments) Bill: part two

With plants in place and seed banks built up in the soil, such a greening might continue unassisted.

ECONOMIST: Ascension Island