An Old Trick的意思|示意

If you have a purse, keep it close to your body, preferably under an item of clothing like a jacket or sweater so that thieves can't do the old snip-the-purse-straps-and-run trick.

如果你有钱包，把它放在离身体近的地方，最好是给夹克或者毛衣什么的衣服盖住。这样的话小偷就没办法偷了就跑。

This Analog Fan USES an old trick with gears and pulleys to generate enough power for 5 minutes of hair blowing wind.

该模拟风扇使用一对齿轮和滑轮老把戏，以便为5分钟吹风需要足够的动力。

And that an old dog can learn a new trick.

廉颇老矣，也可学到新的伎俩。

It's an old trick but it just might work.

它是个老把戏，不过也许能管用。

I later learned that it's an old obstetric trick to threaten the mother of twins with a C-section in order to get her to push out the second baby, but Dr. Gold insisted he wasn't playing that game.

之后我才知道这只是手术中的老把戏，用剖腹产来吓唬双胞胎产妇以使她用力产出第二个孩子，金博士坚持说这次可没玩把戏。

It's an old trick, of course.

当然，这是一个惯用伎俩。