lose one's tongue

tongue的解释... ... a long tongue 长舌,饶舌 lose one's tongue ( 因羞怯等而) 说不出话来 find one's tongue 开口说话了 ...

高考英语复习资料杂汇之二 ... lose one's temper (发脾气), lose one's tongue (紧张得不知说什么好)， lose one's way (迷路), ...

phrases... ... be through with 结束 lose one’s tongue 张口结舌 on the tip on one’s tongue 话就在嘴边（却说不出 来） ...