janjan3344
Four multiplied by three is twelve.multiplyvt.1. 乘,使相乘[(+by/together)]Four multiplied by five is twenty.五乘四得二十。2. 使(成倍地)增加Such examples could be multiplied indefinitely.这样的例子不胜枚举。3. 使繁殖Hot weather multiplied the bacteria in the food rapidly.炎热的天气使食品中的细菌迅速繁殖。vi.1. 增加As we climbed up the mountain, the dangers and difficulties multiplied.我们越向山顶攀爬,危险和困难越是倍增。2. 繁殖Rabbits multiply quickly.兔子繁殖很快。3. 做乘法He learned to multiply at the age of five.他五岁学会做乘法。
细毛1015
兄弟，这种表达我几乎没见到过。不过，我个人认为应该用“are”。不一定对哦，还希望你去找专业老师求证一下。弱弱地问一句，这么简单的英语问题，这么大的百度知道，就没有哪个好老师站出来给解答一下么，这也是醉了。
