Actiyator
[电] 调速控制器
🗣️ 情景例句
That's fine. I'll await his return call.
很好。我会等他的来电。
Know something like the palm of one's hand.
熟知其事，了如指掌。
Wu dropped his stick! He stopped to get it and of course fell behind.
吴的接力棒掉地了！他停下捡棒，当然就落后了。