Earth's surface is not made up of a single sheet of rock that forms a crust but rather a number of "tectonic plates" that fit closely, like the pieces of a giant jigsaw puzzle.

地球表面并不是由构成地壳的单块岩石构成，而是许多紧密相连的“构造板块”，像一块巨大的拼图。

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But the branch of historical linguistics, involves the comparison of several different languages, or the comparison of different stages of a single language.

但历史语言学的一个分支，涉及到几种不同语言的比较，或同一种语言不同阶段的比较。

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Although many of the churches appear from the outside to be complex structures, they normally feature only a single story but numerous different roof levels.

虽然许多教堂从外面看起来结构很复杂，然而它们通常只有一层楼，但有许多不同层级的屋顶。

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But not a single Republican voted for the package in the House of Representatives and only three voted for it in the Senate.

VOA: standard.2009.03.17

So, in general what we see, and this is always true if we're comparing the same atom, and in general, if we're comparing different types of molecules, but we know that a single bond is always weaker than a double bond, which is weaker than a triple bond.

通常我们会看到，这对比较相同原子来说总是正确的，通常，如果我们要比较不同种类的分子，但我们知道单键,总是要比双键弱，双键总是要比三键弱。

麻省理工公开课 - 化学原理课程节选

But in spite of your best effort, you fail to lose a single kilogram.

但是即便你这么努力，你还是一斤肉都没减下来。

I'm frustrated 课堂 - SpeakingMax英语口语达人

Croquet packs a lot of power for a little piece of software, one with but a single line of code for every 300 in Windows XP.

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The Wendelstein 7-AS, a tiddler with a fuel capacity of but a single cubic metre, was built by the Max Planck Institute for Plasma Physics at Garching, Germany, and operated from 1988 to 2002.

ECONOMIST: Fusion power

At the heart of almost all of these issues is the problem of scale: of finding ways to make high-quality educational resources--whether it's brilliant teachers, innovative lesson plans or inspiring new teaching methods--reach not just a handful of students in a single classroom but hundreds of millions of students around the globe.

FORBES: Magazine Article