To perfect the grade system of aerobic instructor, shaping favorable occupation environment.

完善健美操指导员等级制度，形成良好的职业环境。

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According to the FDA's letter-grade system for drug safety during pregnancy, most psychotropic drugs pose a potential risk to the fetus.

根据美国食品药品管理局（FDA）的妊娠期用药安全评级系统（共五级，link），绝大多数精神病类药物对胎儿存在潜在危险。

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Objectives: Gastroesophageal flap valve can be divided into a four-grade system and this system can well predict the prevalence of gastroesophageal reflux disease.

研究动机：胃食道皮瓣可区分为四级。而这种分类系统，可以预测胃食道逆流疾病的发生率。

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But all of you in this room probably remember what we technically call the base 10 system or decimal system because back in grade school or the like, you learned to count and add and subtract numbers by way of columns.

但是，在座的每一位可能都记得,这在小学的时候学的,以10为进制的系统或者十进制系统,通过数列方式学习数数和加减法。

哈佛公开课 - 计算机科学课程节选

The so called binary system, 1 these zeros and ones that you'd probably have some vague sense underlie all computers today actually reduced to the exact same grade school kind of math and system except with computers, 1 because it's a lot easier to use just two digits, zero and one.

所谓的二进制就是，你觉得模糊的0与,在电脑上计算,事实上可以简化为跟小学数学一样,只是在电脑上计算而已，因为它更容易，仅仅使用两个数字，0与。

哈佛公开课 - 计算机科学课程节选

These days, he has a new floating toy--the 533-foot yacht Eclipse, which boasts bulletproof windows, a military-grade missile defense system and an escape submarine.

FORBES

Blu licenses an industrial-grade engineering software system called CATIA used by Boeing to design airliners, Virgin Galactic to build its suborbital space ship and automakers to create cars.

FORBES: Blu Homes' Apple Approach to Building Green Prefab Houses

The joint reference design is based on the Cavium PureVu Video Processor CNW3602 and the Celeno CL1300 HD-grade Wi-Fi System-on-Chip (SoC).

ENGADGET: Celeno and Cavium team up for WiFi-based wireless HDMI solution