So the first thing we got to do is sort of lock on to the tonic.

我们来听一下，我们要做的第一件是是锁定主音。

耶鲁公开课 - 聆听音乐课程节选

I mean, just on the other side of the bridge, yeah, the Camden Lock Lounge, Camden Lock Tavern.

在桥的另一端，有卡姆登洛克酒廊、卡姆登洛克酒馆。

伦敦的夜生活 - SpeakingMax英语口语达人

It's a bit more-- to continue with the metaphor of the on-of switch-- as though not only is the switch turned to off, there's a lock on the switch.

要继续用开关的比喻-,就有点奇怪了-,似乎开关的上面，还有一个锁定装置。

耶鲁公开课 - 死亡课程节选

It's taking me a while to lock on to that tonic.

锁定主音花了我一点时间。

耶鲁公开课 - 聆听音乐课程节选

And then we'll see exactly what it is that he's doing here so we're going to try to lock in on the bass.

现在我们来听一下这首歌究竟是什么样的，然后我们来尝试专攻它的低音部分。

耶鲁公开课 - 聆听音乐课程节选