There was an edge to them, as if the whole thing could collapse on their heads.

但他们总能把握好分寸,好像在担心什么东西,垮下来的话会压死他们似的

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So, I think it's this balance between working very hard and being involved in the greater community, I would say.

所以，一方面要努力学习，一方面要参与大型社会活动，我想，他们需要把握好平衡。

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