彗星是由“脏冰”所组成，而不是像小型那样由固体岩石组成，所以只含有少量的铱。
Comets consist of "dirty ice", rather than solid rock, and so contain little iridium.
每个元素可以由一个以逗号分隔开的列表组成，或者由一个用连字符连接的范围组成，或者单独由一项组成。
Each element can consist of a comma-delimited list, a hyphenated range, or a single entry.
在苏格兰，陪审团由十五人组成，不想英格兰那样只由十二人组成。
In Scotland, the jury consists of fifteen people, not twelve as in England.
众所周知，一切物质由分子组成，而分子由原子组成。
As we know, all matter consists of molecules, and molecules (consists) of atoms.
科学是由事实组成的，就好像房子是由砖块组成的。
Science is built with facts just as a house is built with bricks.
科学是由事实组成的，就好像房子是由砖块组成的。
Science is built with facts just as a house is built with bricks.
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