If possible keep a spare pair of glasses accessible in case your main pair is broken or lost.

如有可能留一副备用眼镜以防你常用的那副打碎或丢失。

《柯林斯英汉双解大词典》

Listing 3. Empty classes used in pair take up more memory.

清单3 . pair中使用的空类占用了更多内存。

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This allows the pair to mate properly and stops the hen from staying in the nest.

这可以使这一对正常交配同时也阻止雌禽待在窝里。

《柯林斯英汉双解大词典》

Then the old man and woman held the rain babies in the palms of their hands or they rocked them to sleep in a pair of wooden shoes.

VOA: special.2009.02.28

An entry is made in the memo whenever an item, memo and an available size pair is considered.

每当选择一件物品和考虑，一种可行的方案时，都会访问。

麻省理工公开课 - 计算机科学及编程导论课程节选

And if we put that in our bond here, we have 1, 2, 3 bonds, plus we have one lone pair left over.

如果我们把它们放到键里，我们有1，2，3个键，还剩下一对孤对在这里。

麻省理工公开课 - 化学原理课程节选

And on April 6, Afghan militants killed six Americans, including a young female diplomat, and an Afghan doctor in a pair of attacks in southern Afghanistan.

NPR: 7 American Service Members Killed In Afghanistan

In a pair of articles in the Indian Express, Surjit Bhalla, an economist, and Ravinder Kaur, a sociologist, use a different set of figures to get a different result.

ECONOMIST: Banyan

Ferguson and Benitez were then involved in an angry exchange almost nose-to-nose in the technical area, with fourth official Marriner in between the pair in an attempt to keep the peace.

BBC: Man Utd 2-1 Liverpool