促胃液素、缩胆囊素和分泌素作用于相同的靶器官.Gastrin and cholecystokinin and secretin act on the same target organs.胃液内含有盐酸给胃蛋白酶提供酸溶液.Gastric juice contains hydrochloric acid to provide an acidic solution for pepsin.研究促胃液素的生物化学时代开始了.The bioch...
An unlimited number of copies can still be made from the original...仍可以由原件复印出无数份副本来。Don't resort to cheap copies; save up for the real thing.别买廉价的仿冒品，攒点钱买正品吧。He ran off a hundred copies on the duplicating machine.他在...
Old people often try to economize on heating, thus endangering their health.老年人常常想方设法节约用暖气，结果损害了他们的健康。Economize in order to make one's money spin out until next payday.节省花钱以维持到下一次发薪.We must economize on fuel.我们必须节约燃...