grunting
v. 发出呼噜声；发出哼声（grunt 的现在分词）
例句
Pigs were grunting and squealing in the yard.
猪在院子里哼哼地叫个不停。
《牛津词典》
He pulled harder on the rope, grunting with the effort.
他边用力边哼声，使出更大的力气拉绳子。
Sounds like—like hogs grunting.
听起来像是——像是猪发出的声音。
