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.,Having said that, he tossed the walnut shells in his hand aside, quickly put on his clothes, and went out.,On the second day, in a inconspicuous corner of newspaper in city A, there was such a small news item.。