这是一个很浅的碗，是在模子里粗略做出来的；因此，只有有限的几个标准尺寸。
It is a rather shallow bowl that was crudely made in a mold; hence, in only a limited number of standard sizes.
研究人员希望最后制造出标准尺寸汽车电池。
The researchers hope to eventually create a full-sized car battery.
然而标准尺寸和橡胶圈的松紧程度因制造商而有所不同。
The standard sizes and the tightness of the elastic rings, however, vary by manufacturer.
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