海量資源,盡在掌握
 1.作不及物動詞,可與on,upon連用,作“起作用,盡職責(zé)”解。例如:Does the drug take long to act(on the nerve centres)?此藥物需長時間才(對神經(jīng)中樞)起作用嗎?The gastric juice acts upon the food we swallow.胃液消化我們吃下去的食物。2.作及物動詞,作“扮......(本文共 1316 字) [閱讀本文] >>