It is the summer vacation now, and we are actively contributing to the infrastructure development of this city, adding bricks and mortar to its growth. Of course, that's just figurative language; in plain terms, it means doing manual labor.,At this time, Wang Ming naturally wouldn't let him off. He bit down hard, trying to break the shell.,At this time, Wang Ming's handful of walnuts had nothing but their shells. Even a bad walnut shouldn't be completely empty.。