“劲”是个多义词,它可以指劲(游戏《炫斗之王》中的角色), 劲(汉语汉字)。
... necessity n.1.需要,必要性 2.必需品 *neck n.劲,脖子 *need vt.需要,须要 aux.需要,必须 n.1.需要(物品) 2.缺少,贫困 ...
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为使这次活动成功费了很大的劲。
做这项工作没费什么劲。
哎哟,你可真慢;加把劲,快点!
So what we'll have here is a trigonal planar case, and you can see that we only have three electrons that are set for bonding, so we'll add three hydrogens, and for b h 3, we'll get a stable structure here.
让电子劲量远离的时候,不用考虑它,这个例子是平面三角形,你可以看到,只有3个电子可以成键。
So if you picture, for example, b h 3, it's going to look like this.
如何使键劲量相互远离,我们会有平面三角形的情形,如果你想象。
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