如何刷牙！如何拉牙线！
In short, the most important factor in whether or not a program is secure — whether it's FLOSS or proprietary — is whether or not its developers know how to write secure programs.
简而言之，程序是否安全最重要的因素是-不管它是FLOSS还是具有专利权的-其开发人员是否知道如何编写安全的程序。
Show the patient how to "brush" and use dental floss properly. I'll see you later, Mrs. Williamson.
你教病人如何正确使用牙刷和牙线。威廉森太太，我稍后再见你。
During your cleaning appointments you'll be taught how to use your toothbrush and dental floss effectively, as a daily routine.
在洗牙时，我们会教你在平时该如何有效地使用牙刷和牙线。
During your cleaning appointments you'll be taught how to use your toothbrush and dental floss effectively, as a daily routine.
在洗牙时，我们会教你在平时该如何有效地使用牙刷和牙线。
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