1. It's like weight lifting, if you train with feather dusters your strength will not increase.
这就像举重练习，如果你用鸡毛掸练习，你的力量就不会增强。
2. For example, Mrs. Nesbitt decreed that maids could no longer carry feather dusters.
举个例子来说吧，内斯比特夫人规定，女仆，不管是哪一个都不能再拿掸子。