They are dangerous only if programmers are careless.
只有当程序员粗心大意时，它们才是危险的。
But only if they operate at near capacity, otherwise, their overall efficiency is poor.
但只能是在它们接近满负荷运转的情况下，否则整体效率就会很低。
Eye of newt goes into the little black bag, if and only if there is reproducible scientific evidence that it works.
当且仅当有可重复的科学证据证明蝾螈之眼有效时，蝾螈之眼才会进入小黑袋中。
The first draft will appear on the page only if you stop avoiding the inevitable and sit, stand up, or lie down to write.
只有当你不再回避不可避免的事情，而是坐着、站着或躺着写作时，初稿才能跃然纸上。
That would be true only if you believed that patients should have an unrestrained right to treatments proven to be inferior.
只有当你认为患者有权不受限制地享有已证劣等治疗时，这才是正确的。
Problems occur only if a contradiction develops between a new observation, say, "That ball is blue", and the preexisting statements.
只有当一个新的观察，比如“那个球是蓝色的”，与已有的陈述之间产生矛盾时，才会出现问题。
Because warm air can hold more moisture than cool air, the relative humidity will be constant only if the amount of water vapor in the atmosphere increases as the temperature rises.
因为温暖的空气比冷空气能容纳更多的湿气，所以只有当大气中的水蒸气量随着温度的升高而增加时，相对湿度才会保持不变。
The lawyer is paid only if he wins.
律师只有打赢官司才会被付费。
Children are admitted only if accompanied by an adult.
儿童必须有成年人陪同方可入场。
Only if the red light comes on is there any danger to employees.
只有红灯闪亮时才有危及职工的险情。
Only if a teacher has given permission is a student allowed to leave the room.
学生只有得到老师的许可才能离开教室。
Only if schools, families and students join hands together, can students get enough sleep and be at their best in schoolwork.
只有学校、家庭和学生齐心协力，学生才能有充足的睡眠，在学业上发挥最佳状态。
If you're standing nearby, the birdhouse will also give you a free Wi-Fi connection—but only if pollution level is low enough.
如果你站在附近，鸟舍也会给你免费 Wi-Fi 连接，但前提是污染水平得足够低。
"Only if we discuss the consequences of our biophysical limits," the December warning letter says, "can we have the hope to reduce their speed, severity and harm."
12月的警告信中写道：“只有当我们讨论生物物理极限的后果时，我们才有希望降低其速度、严重性和危害。”
To keep hope is the best weapon for victory, so never tell yourself "nothing" because only if you try to search, you can always find a "pear" to pull you out of trouble.
保持希望是取得胜利的最好武器，所以永远不要告诉你“什么都没有”，因为只要你努力寻找，你总能找到一个“梨”把你从困境中拉出来。
Failures stop us only if we let them.
除非我们任由失败拖累我们的脚步，否则失败无法阻止我们前进。
Only if you get married I'll be more lonesomer than ever.
只是，你结婚后，我会很孤独的。
But I will promise to forgive you only if you find my ring.
我保证只要你找到我的戒指，我就会原谅你。
That theory held true only if the demand for money was stable.
那一理论只有在货币需求是稳定的时候才正确。
Money can make you happy, only if you spend it in a clever way.
只有在你聪明地花钱时，钱才会使你感到快乐。
Only if we master those abilities can we make a successful micro blog.
我们只有掌握了这些技能，才能做出一个成功的微博号。
Only if they operate at near capacity, otherwise, their overall efficiency is poor.
除非它们是在接近满负荷的情况下运行，否则整体效率会很低。
You are allowed to get access to our computer system only if you get the manager's permission.
只要得到经理的许可，你就可以使用我们的电脑系统。
Where the penalties are not a must, they should be imposed only if the facts of a cast support it.
如果处罚不是必须的，则只有在有事实支持的情况下才应施加处罚。
Where the penalties are not a must, they should be imposed only if the facts of a case support it.
如果惩罚不是必须的，那么只有在该案件有事实支持的情况下才应该施加惩罚。
Only if you take an active part in physical activity will you be able to keep fit and stay healthy.
你只有积极参加体育锻炼，才能保持身体健康。
Only if non-OPEC nations, including Norway, Mexico, and Russia, were to trim output by a total of 500,000 barrels a day.
除非挪威、墨西哥和俄罗斯等非欧佩克国家将日产量总计削减50万桶。
Of course, biological control agents can safely be released only if it can be verified that they feed solely on the target weed.
当然，只有能够证明它们仅以目标杂草为食，生物控制剂才能安全释放。
Peretti says the Times shouldn't waste time getting out of the print business, but only if they go about doing it the right way.
佩雷蒂说，《纽约时报》不应该把时间浪费在终止印刷业务上，而应该采取正确的方式去解决这件事。
Agrillo's team found that mosquitofish can discriminate between numbers up to 16, but only if the ratio between the fish in each shoal was greater than 2:1.
阿格利罗的团队发现，食蚊鱼最多可以分辨大到16的两个数字的大小，但前提是每个鱼群中鱼的比例大于2:1。
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