合成氨
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补充氨
补充气
It gobbles up gas as feedstock to make chemicals such as methanol and ammonia, a vital ingredient of fertiliser.
ECONOMIST: Shale gas is giving a big boost to America??s economy
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。