Methyl 2, 6 - dichlorophenoxyacetate is prepared with 2, 6 - dichlorophenol , sodium methoxide and methyl chloroacetate as raw materials.以2, 6- 二氯苯酚 、 甲醇钠甲醇溶液和氯乙酸甲酯为原料,合成了2, 6-二氯苯氧乙酸甲酯.Dimethyl carbonate is synthesized d...
Eachband everybare generally used as determiners before singular countable nouns.一般都作限定词,用于单数可数名词之前.The word “person” is a countable noun.person这个词是个可数名词。Is this word a countable noun or an uncountable noun?一般说来,这里我们用代词来...
Do it, by all means, but strictly on the quiet.这件事一定要干, 不过要严守秘密.The doctor told me on the quiet his patient had cancer.医生暗地对我说,那位病人患的是癌症.She'd promised to give him driving lessons, on the quiet, when no one could se...