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 、 甲醇鈉甲醇溶液和氯乙酸甲酯為原料,合成了2, 6-二氯苯氧乙酸甲酯.Dimethyl carbonate is synthesized d...
Do it, by all means, but strictly on the quiet.這件事一定要干, 不過要嚴守秘密.The doctor told me on the quiet his patient had cancer.醫生暗地對我說,那位病人患的是癌癥.She'd promised to give him driving lessons, on the quiet, when no one could se...
Eachband everybare generally used as determiners before singular countable nouns.一般都作限定詞,用于單數可數名詞之前.The word “person” is a countable noun.person這個詞是個可數名詞。Is this word a countable noun or an uncountable noun?一般說來,這里我們用代詞來...