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....
Non - basic nitrogen - containing series include pyrroles, indoles, carbazoles and benzcarbazoles.不含碱性氮的化合物包括吡咯 、 吲哚 、 咔唑和苯咔唑.Nitrogen trifluoride ( NF 3 ) is a toxic, colorless, odorless, nonflammable, oxidizing compres...
But we really need something to help us cheer on the team!我也觉得能和你一起看球很幸运.Suddenly, a cheer on the playground, head surging.顿时, 操场上一片欢呼, 人头涌动.A mass exodus of Liverpudlians converged on the Italian capital to cheer on the...
Online gaming allows players from around the world to challenge each other.网络游戏使得全球的玩家可以相互较量。He said he's game for a similar challenge next year.他说他明年还愿意接受类似的挑战。Increasingly, more wine-makers are taking up the chall...