The atmosphere consist of more than 70 % of nitrogen.大气中含有70%以上的氮气.Every tonne of coal contains, on average, 30 kilograms of nitrogen.每吨煤平均含30公斤氮.The plant requires nitrogen in order to make proteins.植物需要氮以便制造蛋白质....
She was Dean of the Science faculty at Sophia University.她是上智大学科学院的院长。I'll lay odds that Dean is at your office right now.我敢打赌迪安现在就在你办公室。He also began a running feud with Dean Acheson.他也开始接二连三地和艾奇逊院长发生争执。...
解读他们的肢体语言。他们的眼睛游离不定吗，抑或他们在用手指不停地敲打桌子？Read their body language. Are their eyes wandering or are they drumming the desk with their fingers?被子植物开始时是浸沉在液体中的游离合子.Angiosperms begin as free zygotes immersed in a fluid.包含游离核的合点端...