张口

He just stood there, tonguetied and grinning sheepishly.

是张口结舌地站在那儿，羞怯地笑着。

The pursiness time of mice was observed to evaluate the effect of Erigeron breviscapus pellets on cerebral ischemia.

记录小鼠断头后张口喘气时间，观察灯盏花颗粒的抗脑缺作用。