双语例句原声例句权威例句
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In terms of extra staff—how many will we need?
就额外的员工来说，我们需要多少人？
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Whether we need more food depends on how many people turn up.
我们是否需要更多的食物，这要视到场人数而定。
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我们需要多少个李子？
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Step three in our Lewis structure rules is to figure out how many electrons we would need in order for every single atom in our molecule to have a full valence shell.
路易斯结构规则的第三步是,找出让分子中每个原子的价壳层,都排满应该需要多少个价电子。
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And if we go on to step three where we figure out how many we would need for full octets, it's just going to be 2 times 8, so we have 16.
而如果我们继续到第三步,判断一下填满所有“八隅体“需要多少个价电子，结果应该就是二乘以八，也就是十六个。
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So we have 18 electrons, and the next thing that we need to figure out is how many bonding electrons we have.
那么我们有十八个电子，下一步要做的是判断,我们有多少个成键电子。
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