gnashing
n. 气得咬牙
v. 气得咬牙（gnash 的 ing 形式）
例句
He'll be gnashing his teeth when he hears that we lost the contract.
他要是听说我们丢了这份合同，准会气得咬牙切齿。
《牛津词典》
If you couldn't attend either of the concerts and are currently gnashing your teeth at having missed out, don't despair.
如果你两场音乐会都去不了而为此咬牙切齿的话，别绝望。
《柯林斯英汉双解大词典》
Andthis leads to "weeping and gnashing of teeth," i.e. sorrow and depression.
这将导致“哭泣和咬牙切齿”，就是指悲伤和绝望。
