例如，美国童子军有可以因100个不同的优点而获得奖励徽章，每一个都以如植物科学或救生等特定主题为着眼点。
For example, the Boy Scouts of America allows more than 100 different merit badges to be earned, each focused on a specific topic such as Plant Science or Lifesaving.
色素添加剂划分成两大类：从自然资源中(如植物，矿物，动物)获得的天然色素和不能在自然界中找到的人造色素。
Colour additives belong to one of two groups: pigments derived from natural sources such as vegetables, minerals or animals and those not found in nature and must be man-made.
你会发现大多数喜阴的植物，如马鞭草，不会因为下雨而闭合。
You will find that most shade-loving plants, as the verbenas, do not close for rain.
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