【正文】
round up 使聚攏 The cowboy rounded up the cattle. Round up the whole class。 她在用勺喂孩子 feed…with feed on 以 …為食,靠 …維生 feed sth. to sb. 把 …喂給 They feed the babies on/with milk. They feed milk to the babies. Sheep ___ _ grass. feed on give birth to His sister has given birth to a healthy baby. The Chinese nation has given birth to many heroes. keep out 使在外 。Unit3 The land down under Integrating skills 1. What is the official name of Au