Look, not so long ago I was on a mission that meant certain death – my death – and now I'm back, in a nice warm office with my big brother and ... Are those ginger nuts?

当look单独用时，一般有两种意思

1. 看（把某人的目光指向一处）

Look! Someone's wearing the same shirt as you. What a coincidence. 快看！有人跟你穿一样的T恤。好巧！

Look! I sent you the message at 5 AM this morning. I told you I wasn't lying. 看，这信息是我早上5点给你发的。跟你说了我没撒谎。

2. 可以表强调，引起注意，也可以表达愤怒或者生气的情绪

Look, I already told you about this. Don't ask me again. 这我都跟你说过了，不要在问我了。

Look, there's no need to start arguing. That'll get us nowhere. 我们没必要开始吵。这并不能解决问题。

Look, we've already been through this. I don't want to talk about it anymore. 我们已经谈过这个了，我不想再谈了。