Top brands can be on the pricey side so if you're on a budget grab a cheap substitute such as a silver car sunscreen, reflective tanning mat or wrap a circular sheet of cardboard in aluminum foil.
名牌的反光板太昂贵，你可以用个便宜的替代品，比如银色的车用防晒遮光剂，反光的皮革衬垫，或者自己弄个一张包着铝箔的圆卡片。
Define your problem. Grab a sheet of paper, electronic notebook, computer or whatever you use to make notes, and define your problem in detail.
界定你的问题。随便一张纸，用你的手写手机，电脑也可以，只要能记下你的笔记就可以，详细而周密地定义你的问题，一旦你这么做了，你将发现很快会有解决方案。
She suggested we grab a sheet, hold it under the branch Chris was hanging off, and tell him to drop so we can catch him.
她提议我们拉一张床单，站在克里斯的正下方，让他跳下来，然后，我们就可以把他接住了。
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