Collagen supplements improve skin but won't stop wrinkles, research says 研究称胶原 ...

Do collagen supplements really work? The team behind this review assessed the results of 113 trials involving nearly 8,000 people, and say it brings together the strongest evidence to date on collagen ...
BBC

Set off 和 set out 的区别

Helen 以上的例句中我们用 set off 或者 set out 表示“出发、动身”。 现在我们来看一下 set off 和 set out 的不同之处。 先说 set off, 它有好些含义。 我们可以用 set off 表示“启动什么东西，让它开始工作”。 请听例句。 Example Lily opened the door and set off the alarm.