To keep your house mouseproof , check all small openings with a ballpoint pen. If it fits the hole, it will let mice in.
要使你的房子里没有小老鼠，用圆珠笔来检查下所有的小洞。如果圆珠笔能放进去的话，那小老鼠就可能钻进去。
A spider has hundreds of small openings in its body.
一只蜘蛛体内有数百个小开口。
Over the past 10 years or so, this has been done laparoscopically, which is a way of performing surgery using small openings.
在过去十年，是用腹腔镜，这种方法的开口也很小。
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