于是，我决定先完成其它作业，再来解决这道“拦路虎”。
So I decided to complete other assignments, and then to solve the "obstacle".
几百万只幼小的虾虎鱼正溯溪而上，但它们会在低地先遭受层层的攻击。
Millions of young goby fish head upstream, but they must first run the gauntlet of the lowlands.
如果我们先弄清两条技术术语“应力”和“应变”，从数量上来研究虎克定律就很容易了。
It will be easier to deal with Hooke's Law quantitatively if we pause to define a pair of technical terms: "stress" and "strain".
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