Experts cannot tell us a safe limit for cell phone use.
专家仍然不清楚手机使用的安全极限是多少。
Austria's corresponding safe limit is set at 100 micrograms.
奥地利的相应安全上限为100微克。
Benzene levels in its soilare said to be 43,000 times the safe limit.
东部地区土壤里的苯含量据说超过安全限制43,000倍。
Its air has been so radioactive, a worker could be exposed only five hours before exceeding a safe limit.
安全壳内的空气具有相当的辐射性，工作人员最多只能曝露5个小时，否则就超过安全范围。
The toxic drugs such as Radix Aconiti Lateralis Preparata can reach the safe limit after being decoctered first 30 minutes.
毒性药物如附片则先煎30分钟即可达到安全限量；
Too much of a good thing can cause harm: High amounts of vitamins in supplements plus what you get in food can put you over the safe limit.
好的东西太多会造成伤害：营养补充品维生素含量过高，加上你从食物中获取的营养会使你超出安全标准。
In late 2008, Ireland recalled many tons of pork meat and pork products when up to 200 times more dioxins than the safe limit were detected in samples of pork.
2008年末，爱尔兰因在猪肉抽样检查中检测出二恶英含量超出安全指标的200倍，召回大量猪肉和猪肉产品。
There is no current research available that provides a safe limit for sun exposure to maximize vitamin D production that does not put the individual's health at risk for developing skin cancer.
现在的研究无法做出伤害人体的实验，以至于无法得出究竟多少的晒日可以尽可能产生维生素D而不至于对健康产生患皮肤癌的风险。
In order to create an environmentally friendly and safe world, it is necessary for each country to set vehicular quotas and limit the permits in number to control regional air pollution.
为了创造一个有益于环保和安全的世界，每个国家都有必要定出汽车限额，并限制发放许可证的数量，以控制地区的空气污染。
Use of PHP's safe mode is one technique for meeting this goal, but it can also unduly limit users, and some PHP applications simply don't function with this facility enabled.
使用PHP的安全模式是实现这一目标的一种技术，但是它也过度地限制了用户，而且启用了这个设施之后，一些PHP应用程序就不能发挥作用。
Can we seal a comprehensive, equitable and ambitious deal in Copenhagen that will reduce greenhouse gas emissions and limit global temperature rise to a scientifically safe level?
我们能够在哥本哈根达成一个全面、公平而又雄心勃勃的协议，以降低温室气体排放和把全球气温上升限制在科学上认为安全的程度吗？
The group is requesting that the FDA enact a rule that sets a limit on the amount of polycyclic aromatic hydrocarbons deemed safe for pregnant women and young children.
该机构正在要求FDA就多环芳烃对怀孕妇女和儿童无害的最低安全含量做出规定。
There is a limit that is not based on animal studies, but we can't be certain that even the small amount is safe in humans, especially if consumption of the chemical goes on for years.
目前有一个并非基于动物研究的三聚氰胺的数额限值，但我们不能确定，即使是这少量的数额是否对人类来说就是安全的，尤其是经过长年累月的摄取三聚氰胺。
But while higher is better from a fuel conservation perspective, there is an upper limit on how high it is safe to orbit humans for long periods.
越高耗费的燃料越少，而载人飞船能够长时间安全飞行的轨道高度就有上限。
For this reason, the speed of a grinding wheel should not exceed the safe surface speed limit specified by the manufacturer.
基于此原因，砂轮的速度不应超过制造商规定的安全表面速度的限制。
The Institute of Medicine recommends 600 units a day for everyone from age 1 to 70 and 800 units for men and women 71 and older, with a safe upper limit for everyone over the age of 9 of 4,000 units.
医学研究院建议年龄1岁到70岁的每人每天600单位；超过71岁的人每人每天800单位；4岁以上的人每天摄取量的安全上限为4000单位。
The PBC and SAFE took some temporary measures to limit buying foreign for some capital account transactions in 1998 according to the special situation at that time.
1998年，中国人民银行和国家外汇管理局根据形势需要，在资本项目外汇管理方面采取了一些临时性的购汇限制措施。
The evaluation on the retained limit strength of in service oil pipelines is a basic job ensuring safe and reliable operation of the pipelines.
在役石油管道剩余极限强度评价是为保障在役石油管道安全可靠运行的基础工作。
No exercise recommendations across the globe mention an upper limit for safe exercise, but perhaps there is one.
目前，全球尚无有关安全锻炼的上限建议，但或许应该有一个。
Limit your movements during an earthquake to a few steps to a nearby safe place.
地震发生时，将你的活动范围限制在附近某个安全点的几步之内。
So, it is necessary to do some research with the scheme, to provide the locomotive repair limit with theory basis and. Ensure safe performance.
因此，有必要对机车轮对加装扣环的方案进行理论的分析研究，为机车轮对的检修限度提供理论依据，保证铁路机车安全运行。
Current limiting is included to limit the peak output current to a safe value.
包括电流限制，以限制峰值输出电流的安全值。
The speed limit is a guide to drivers of the maximum safe speed, but circumstances vary.
速度极限提供给驾驶员一个最高的安全时速，但环境是不断变化的。
The onset of lower back rounding defines a lower limit for safe squatting when heavy weights are used, and you should stop above this point.
负重时，当重的压重被用，而且你应该在上面这点停止的时候，比较低的后面圆化的攻击为保险箱蹲下定义一个较低的界限。
The study of cities in China found the average annual expose to PM2.5 was 56 micrograms per cubic metre, compared to the WHO guideline limit for safe air quality of 10 micrograms.
对中国城市的这项研究发现，PM2.5的年均接触量为每立方米56微克，而世界卫生组织的空气质量安全标准为每立方米10微克。
In order to maintain a safe trading environment, eBay places a selling limit on new sellers.
为了维护安全的交易环境，易趣名额限制的新的销售卖家。
A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the outer limit of the channel or fairway which lies on her starboard side as is safe and practicable.
船舶沿狭水道或航道行驶时，只要安全可行，应尽量靠近本船右舷的该水道或航道的外缘行驶。
A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the outer limit of the channel or fairway which lies on her starboard side as is safe and practicable.
船舶沿狭水道或航道行驶时，只要安全可行，应尽量靠近本船右舷的该水道或航道的外缘行驶。
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