To sand flat edges or complex profiles, whether solid veneer or substrate material.

砂光平面边部或剖面，实木单板或基材。

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Researchers looked at whether introducing solid food after six months reduced the risk of asthma, allergic reactions and eczema.

BBC: A child is tested for allergic reactions.

Before the probe was launched, astronomers did not know whether asteroids were solid objects or collections of smaller pieces of rock, referred to in the trade as rubble piles.

ECONOMIST: Eros

There is no substitute for the trained ear and the feeling you get from watching live performances when it comes to determining whether an artist is solid or not.

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