垃圾袋更轻，只装了三分之一。
用洗发帽或一个塑料袋覆盖在头皮上，等15到30分钟，然后彻底清洗干净。
Cover your scalp with a shampoo cap or a plastic bag, wait 15 to 30 minutes, then rinse thoroughly.
根据他们的调查，由于消费者慢慢习惯了自带可重复使用的塑料袋，塑料袋的使用已经降低了三分之二。
According to their survey, plastic bag use has fallen by two thirds as consumers grow accustomed to bringing their own reusable bags.
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