muck in1.■[英国俚语]2.■一起干活，一起出力；参加：If we muck in, we'll soon finish the work.如果我们大家一起干，工作很快就会完成。3.■与…住在一起；结伴(常与 with连用)：I mucked in with him till Christmas.在圣诞节前，我一直和他住在一起。4.■与…交往；合作；友好相处(常与with 连用)：He is a kindly teacher, mucking in with his students.他是一位和蔼可亲的教师，能与学生们打成一片。