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.

Last year, global temperatures were cooled slightly by a natural weather pattern in the Pacific called La Niña. That meant it wasn't quite as hot as 2024, but the long-term trend is clear. The last 11 ...