Gross MarginGross margin is the percentage difference between what a product sells for in the market and what it costs to produce that product.what it costs为什么不写成how much it costs?
原句：People had no choice but to get their drinking water from toxic sources, and scores ended up in emergency rooms with gastrointestinal illnesses. 请问老师这句话后面的 scores 是不是 scores of them 省略了 of them.
In 1982 , the Securities and Exchange Commission passed a rule allowing companiesto buy back their own stock.(译文：在1982年，美国证券交易委员会通过了一项规定，允许公司回购自己的股票。)问：这里的allowing companies to buy back their own stock. 是现在分词...
...llow waters no deeper than 200 waters where marine
organisms breed and grow.句子成分是，主 系 表 比较状语(介词that引导) 定语从句，那老师no deeper在句中做什么成分，我觉得根据翻译应该是定语，但是既然是定语应该放在shallow waters前...
But he (the writer) has his reward, for he is trusted and convinces, as those who are at the mercy of their own eloquence do not.请问老师这句话中的as引导什么从句？该如何翻译
Illustrated with an entertaining array of examples from both high and low culture,the trend that Mr.McWhorter's documents is unmistakable. But it is less clear, to take the question of his subtitle, why we should, like, care.红色部分的句子该如何分析呢？
Regardless of how far we' d like to believe gender equality in workplace has come , there is still a yawning gap between male and female leaders in the professional world.逗号以前的句子是how far 里面又有一个主句从句吗？
The response was
tremendous,with one biscuit weighing 500 pounds and another weighing 713
pounds.想问问这里的with是独立主格结构么，weighing也就是“重”的意思吧，尤其是with这方面学生脑回路总是不知道该怎么理解和去用？
改错句——请问这句话中都有什么错误的地方呢？It has been reported a great number of
cases concerning racial inequality,such as in America a white policeman killing
a black man screaming I can’t breathe by pressing his neck with knees,Asians
being attacked frequently and so on.
In around 8 A.Q.,the Romans built the Colosseum , which remains the world's best known stadium and continues to inform contemparary design.问：这里的 8 A.Q.是什么意思，公元前是BC, 公元是AD，可这里的A和Q分别代表什么？
There is no subject to which a university should bring more delicacy and sureness of touch than the selection of its honorary graduates.句式包含了 “ there be ” 句型否定式、“ 介词+which ” 定语从句以及 “ more than ” 比较级。请问如何对上述句式进行准确翻...