We need to sieve out the stones from the soil.

我们要把土壤中的石头筛出来。

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Objective: To sieve out the best methods for nevus treatment.

目的：筛选皮肤色素痣的最佳治疗方法。

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Different specifications of stone to sieve out after funnel into belt-conveyors sent to the finished product concepts.

不同规格的石料筛出后经漏斗落入皮带机送至成品料场。

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Curiosity will use a drill and scoop, which are located at the end of its robotic arm, to gather soil and powdered samples of rock interiors, then sieve and parcel out these samples into the rover's analytical laboratory instruments.

ENGADGET: NASA's Curiosity rover receives long-distance OTA update, 'brain transplant' on Mars

Like the typical sieve, these science news filters tend to winnow out the small but still important bits and retain a lot of the big speculations, always starting with a hyperbolic headline.

FORBES: 5 Changes Consumers Want To See In Science News

Housing benefit, which is doled out by local authorities, has long been leaking like a sieve, but it also seems to be slowly on the mend.

ECONOMIST: Benefits fraud