I'd set my teeth into my tongue sooner nor speak i' haste.

我会早点咬紧牙关， 也不会匆忙说话。

Today I raised your letter hastily to my lips, and it set my teeth on edge.

今天我匆匆把你的信举到唇边，让我咬牙切齿。

I set my teeth, clenched my hands, and vowed that I would do well next time or never sing another note.

我咬紧牙关， 握紧双手，发誓下次一定要好好唱， 否则再也不唱了。