By working slowly from both sites, you can nearly close the gap between the two teeth, but don't make it disappear completely, that would look again unnatural.

两边都这样慢慢处理，你几乎可以缝合牙间的缝隙，但也不要让它们完全消失掉了，那又会看起来很不自然。

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As Tom wended to school after breakfast, he was the envy of every boy he met because the gap in his upper row of teeth enabled him to expectorate in a new and admirable way.

当汤姆吃过早饭去上学的时候，在路上遇到的每个孩子都羡慕他，因为他上排牙齿的缺口能够使他用一种新的方法吐唾沫。

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As the gap of teeth of internal matins gears with small tooth number difference is small, several teeth will mate simultaneously after the teeth are deformed by load.

渐开线少齿差齿轮副，由于是内啮合，齿轮副的齿对之间的间隙很小，在受力后轮齿变形而使得同时有多对齿啮合。

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Mr Miller, 88, from Portsmouth, said he also applied to join HMS Barham as a bugler but was turned down as he had a gap in his teeth which meant he was unable to play.

BBC: HMS Barham