Once people get fat, it is hard for them to get thin; once they are used to breakfasting on chips and Coke, that's hard to change.
—旦人们发胖，'就很难瘦下来。一旦他们习惯于早餐吃炸土豆条和可乐，就很难改变过来。
Given this kind of success, it's hard to believe that Coke started out as a medicine that sold barely nine bottles a day.
在这样成功的情况下，很难相信可口可乐原来是一天几乎卖不到九瓶的药品。
Because coke sewage contains lots of hard-biodegraded and toxicant substances, it is considered one of the industrial waste water which is difficult to purify.
焦化废水由于含有大量的难生物降解与有毒物质，因而成为公认难处理工业废水之一。
Doing things with the wrong hand sounds hard. But the shopping list thing sounds easier… OK. Let's see… pizza, doughnuts, crisps, bottle of coke, chocolate cake…
用左手做事情听起来好难。记购物清单听起来容易些。的，我们试试，披萨、甜甜圈、薯片、可口可乐、巧克力蛋糕……
Beer is more like a soft drink to most American youths you know like coke. but you don't see us drink hard liquor do you?
对美国年青人而言，啤酒就像可乐一样是软性饮料。你没见我们喝烈酒吧？这倒是真的。
The traditional method to deal with the coke plant wastewater is a means using by the active dreggy mud, which has less effect on the hard-degraded substance and ammoniacal nitrogen.
由于含有大量的难生物降解及有毒物质，因而成为公认难处理工业废水之一。
Because coke sewage contains lots of hard-biodegraded and toxicant substances, It is considered to be one of the most difficult industrial wastewater to purify.
由于焦化废水中含有大量的难生物降解以及一些有毒还对微生物有害的物质，而且其可生化性差，因而焦化废水成为公认难处理工业废水之一。
Pressure system in coke oven gas-collecting pipe is a multi-coupling, nonlinear, strong disturbed, multi-variable and time-varying system. It is hard to control it in usual methods.
集气管压力系统是一个耦合严重、非线性、扰动频繁剧烈的多变量时变系统，很难用常规方法加以控制。
Pressure system in coke oven gas-collecting pipe is a multi-coupling, nonlinear, strong disturbed, multi-variable and time-varying system. It is hard to control it in usual methods.
集气管压力系统是一个耦合严重、非线性、扰动频繁剧烈的多变量时变系统，很难用常规方法加以控制。
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