If she chooses, she can use a clock with a pendulum, put books on a shelf without any danger of their floating away, and hang a picture on a nail in the wall.

如果她选的话，她可以使用一个有钟摆的钟，把书放在书架上而不会有飘走的危险，还可以在墙上的钉子上挂一幅画。

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Some riders put a dab of nail polish on the binding's screw threads to help keep the screws in place.

有一些滑雪者会往固定器的螺丝上涂上指甲油保证螺丝不会松动。

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She went up to her room and took from her dressing-table several small articles and put them out of sight: a nail-file on the floor under the bed;

她去自己的房间，从梳妆台上拿了几件小物件放到看不见的地方：一把指甲挫放在床下的地板上；

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"These tapes, which the committee will put on display, really nail down the case, " said Sen.

CNN: Senate Republicans To Zero In On Videotapes