Do you like it or would you prefer something shorter? A shorter name would be more convenient on a sign.
VOA: special.2009.09.20
because it’s such a convenient, such an easy way to keep in touch with everybody.
因为这个真的可以很方便地跟大家保持联系。
Unlike the case for energy like you've seen in lots and lots of disciplines, where you can arbitrarily set the zero in a way that makes it convenient for you.
通过无数的练习题,你们已经看到这和能量不同,对于能量我们可以任意确定,能量的零点。
It’s such a convenient way
真的很方便,
But what we will find is, it's more convenient to lump these two numbers into a single entity, which is called a vector.
但我们会发现,将两个数值看作一个整体会更方便,我们称之为矢量
and it's a really convenient way to keep in touch with them.
这样联系他们真的很方便。
Renting a car is cheaper and more convenient.
租车要便宜得多,也方便得多。
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