ADJ [usu ADJ after v, ADJ n](因震惊、恐惧、兴奋等而)张大嘴的,瞠目结舌的,目瞪口呆的 If someone is looking open-mouthed, they are staring at something with their mouth wide open because it has shocked, frightened, or excited them. (因震惊、恐惧、兴奋等而)张大嘴的,瞠目结舌的,目瞪口呆的
They watched almost open-mouthed as the two men came towards them.
他们几乎目瞪口呆地看着那两个人朝他们走过来。
The finale had 50,000 adults standing in open-mouthed wonderment.