最近，新冠肺炎疫情在世界肆虐，各國都開始提倡少接觸、勤洗手。CDC給出的洗手指導意見是：起碼用肥皂搓20秒。如果對時間沒概念，可以唱兩遍生日快樂歌。
雖然有點沙雕，但好用就行。
此前的一些不良洗手習慣趕緊改掉吧，比如不用肥皂只用水衝兩下，或是把手上的水往牛仔褲上一抹。
There's a proper way to do it. And it doesn't include rinsing your hands for a moment and a half, wiping leftover droplets on your jeans and then calling it a day.
Instructions from the CDC say you should be lathering soap on your hands for at least 20 seconds. To help you keep track of time, the agency suggests you hum the "Happy Birthday" song twice.
看新聞溫故知新單詞：
rinse v. 沖洗，漱
droplet n. 水滴 滴液
hum v. 哼唱
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