Firstly, ambition plays an essential role because it serves as a driving force for people to achieve success.
首先，志向起着至关重要的作用，因为它是人们取得成功的动力源泉。
Firstly, food is often thrown away before it reaches customers because too much of it is produced.
首先，食物经常在到达顾客之前就被扔掉，因为生产的食物太多了。
This is because of the following three reasons: Firstly, the thief only stole things from me but did not hurt me at all; secondly, the thief has stolen some of my things instead of all my things; thirdly, most luckily for me, it was the man rather than me who became a thief.
这是因为以下三个原因：第一，小偷只偷我的东西，而没有伤害我；其次，小偷偷走了我的一些东西，而不是我所有的东西；第三，对我来说最幸运的是，成为小偷的是那个人，不是我。
Firstly, many truck drivers are forced to drive days and nights with little rest simply because their employers desire more profit.
首先，很多卡车驾驶员被迫日夜不停地驾驶，因为他们的雇主想赚更多的利润。 第二，许多市民在酒后驾驶，一旦发生紧急情况他们的反应会比较迟缓。
"It is one of those issues which can articulate the middle class, " he said. "Firstly because once you've got a certain level of prosperity, concern about the environment becomes greater.
拉纳·米特指出环境可能是一个争拗点.他说:「这是一个能够团结中产阶级的议题之一.首先当你们一旦得到一定水平的富足,便加强对环境的关注.第二,因为有一个拥有财富的中产阶级,他们变得更加关心自身利益.任何稍为偏颇的方向都可能带来麻烦,也许是一个提示.」
Firstly because there is a lot of things to see and to photograph (monuments, people, everyday scenes of life...) and secondly because my camera does not attract the attention of thieves.
在巴黎，要看的东西实在太多了（纪念碑，行人，日常生活）。 还有啊，我的相机也不会引来贼的注意。
Firstly, it is very important for us to take more fruits and vegetables because they provide vitamins, and we have to keep a balanced diet.
首先，这对我们来说是非常重要的采取更多的水果和蔬菜，因为他们提供维生素，我们必须保持均衡的饮食。
Firstly , overnight work is dangerous because it disrupts the circadian rhythm, the body's biological clock. The hormone melatonin, which can suppress tumor development, is normally produced at night.
首先，通宵工作是危险的，因为它打乱了生理节奏，身体的生物钟，可以阻止肿瘤生长的黑色素，通常是在晚上产生的。
Firstly, television is watched by babies, partly because parents park them in front of it and partly because even babies perceive a need for t.v. to combat boredom.
首先，婴儿看电视的部分原因是父母将他们放在电视机前。
They are angry with me firstly because I went to the United States, secondly because I didn't come back after the war and thirdly because I came back.
他们生我的气，第一是因为我去了美国，第二是因为战后没有回国，最后是因为我后来又回来了。
Firstly, it is very important for us to take more fruits and vegetables because they provide vitamins and they help in the process of digestion.
首先，我们吃更多的水果和蔬菜是非常重要的，因为他们提供维生素和他们在消化过程中的帮助。
After all, we are very lucky, firstly because we're very healthy but also because we do what we love which is playing football.
我们很走运，首先我们很健康，但也因为我们从事的是自己最热爱的足球事业。
Firstly, we don't have to do many things personally, because we have robots to finish them for us.
首先，我们不用亲自去做很多事情，因为会有机器人替我们完成。
Firstly, Optimization back analysis of parameters is carried out based on the datas of practical measure, because in this project the parameters of concrete neither testing nor practical datas.
由于本工程混凝土材料各项物性参数即无试验数据又无量测数据，所以，本文首先结合实际测量资料对其进行了参数的优化反演。
Firstly, 5 Numbers will appear and you got to memorize it fast because a white box will mask it soon after.
首先，5个号码会出现，你一定要记住它快，因为一白框将遮罩后不久。
Fred: : Firstly, it is convenient. And secondly, it has low cost, because you know you only need to pay the fee of Internet service.
佛瑞德：第一点，那就是方便第二点则是它的成本比较低，你知道只需付网费就够了，网费很便宜。
Fred: Firstly, it is convenient. And secondly, it has low cost, because you know you only need to pay the fee of Internet service.
佛瑞德：第一点，那就是方便第二点则是它的成本比较低，你知道只需付网费就够了，网费很便宜。
In stabilizing and tracking system of optoelectronic platform, a stabilizing control loop must be designed firstly because of various external disturbances.
机载光电平台稳定与跟踪系统由于受到外部各种干扰的影响，需要首先建立一个稳定控制回路。
Firstly, I will buy a MP3, because I like listening music.
首先，我会买一个MP3，因此我喜欢听音乐。
Firstly, because of the new international trade environment and anti-dumping system characteristics the legal and effective anti-dumping measure is widely used in the whole world.
首先新的国际贸易环境和反倾销自身制度特点导致反倾销这一合法有效的非关税手段被广泛的应用。
Firstly, do not encrypt the password locally because that means your application has to also decrypt it, hence it will hold the symmetric key in memory and make it vulnerable.
首先，不要加密密码局部因为意味着你的应用程序也将其解密，因此它将保存在内存中的对称密钥，使其易受攻击。
Firstly because running is a single-plane activity – it only uses the body in one direction and uses a limited number of muscle groups at a time.
首先，由于跑步是一种单一水平运动，它只运用了身体的同一方向趋势和在同一时间只活动了有限的肌肉群。
Firstly because running is a single-plane activity – it only uses the body in one direction and uses a limited number of muscle groups at a time.
首先，由于跑步是一种单一水平运动，它只运用了身体的同一方向趋势和在同一时间只活动了有限的肌肉群。
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