These vectors can have different features (such as the size of DNA-insert they can accommodate) and include plasmids, cosmids, and yeast artificial chromosomes (YACs).
这些载体具有不同的特征，包括质粒、粘粒和酵母人工染色体。
Stars with similar masses might not be similar in size because they have different densities.
相似质量的恒星可能在大小上有所不同，因为它们有着不同的密度。
It's not hard to imagine that two different programmers might want to store different font sizes, and if they each decided to store theirs under the name "font size," we'd have a problem.
不难想像两个不同的程序员可能希望存储不同的字体大小，如果他们决定以同一个名字“font size”存储他们的值，那么我们就有问题了。
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