He writes only when he feels inclined to.
他只在想写作的时候才动笔写。
Such events occur only when the external conditions are favourable.
此类事件只有当外界条件有利时才会发生。
It was only when he finally drifted off to sleep that the headaches eased.
当他最终慢慢睡着时，头疼才减轻了。
The company's troubles started only when it diversified into new products.
该公司的麻烦从实现产品多样化时才开始。
The Bank of England insists that it will cut interest rates only when it is ready.
英格兰银行坚持只有在它做好准备时才会降低利率。
Only when each logical step has been checked by other mathematicians will the proof be accepted.
只有在每个逻辑步骤都由其他数学家验证之后，该证明才会被接受。
Only when a juggler misses catching his ball does he appeal to me.
只有在一个变戏法的人接不到球的时候，他才能吸引我。
These invisible duties become apparent only when you don't do them.
这些无形的责任只有在你不去做的时候才会显现出来。
He told his son that one feels pain only when the fruits of labor are wasted.
他告诉儿子，只有当劳动的果实被浪费时，才会感到痛苦。
Only when one has accepted that, is there any possibility of scoring a bull's eye.
只有当一个人意识到这一点，才能够射中靶心。
Only when we react to emergencies in life calmly, can we solve problems in a better way.
只有当我们冷静应对紧急状况时，我们才能更好地解决问题。
Only when Heidi was sitting in the train did she become conscious of where she was going.
只有当海蒂坐在火车上时，她才意识到她要去哪里。
Such co-operation is likely to be stable only when each animal feel it is not being cheated.
只有当每个动物都觉得自己没有被欺骗时，这种合作才有可能是稳定的。
Only when Lily walked into the office did she realize that she had left the contract at home.
只有当莉莉走进办公室时，她才意识到自己把合同落在家里了。
For hundreds of thousands of Cascadia residents, "The Big One" isn't a question of if, only when.
对于卡斯卡迪亚成千上万的居民来说，“大地震”不是是否会发生的问题，而是何时发生的问题。
It's a dramatic endorsement for a technology most people think about only when their smartphone goes dark.
对于一项大多数人只有在智能手机黑屏时才会想到的技术来说，这是一个戏剧性的认可。
Only when advanced countries extend a helping hand to developing countries, can the world be a better place.
只有当先进国家向发展中国家伸出援助之手时，世界才能变得更好。
The total amount of damage to Notre Dame Cathedral can be assessed only when its structure is considered safe.
只有在巴黎圣母院结构安全的情况下才能评估其损失总额。
Only when many studies are combined in a meta-analysis will the faint signal of telepathy really become apparent.
只有当许多研究结合在一起进行荟萃分析时，心灵感应的微弱信号才会真正显现出来。
Only when all of us join efforts to eliminate pollution at all levels can we expect to have a better environment.
只有当我们所有人共同努力消除各种污染时，我们才能期望有一个更好的环境。
The data of an individual there gains its value only when it is compared with the data of countless millions more.
在那里，个体的数据只有在与其他无数人的数据相比时才能体现出价值。
Inferential activity is likely only when consumers are motivated and able to engage in effortful cognitive processes.
只有当消费者被激励并能够经历费力的认知过程时，推理活动才可能发生。
When, and only when, these behaviors occur, does an authority relationship exist between the superior and subordinate.
当且仅当这些行为发生时，在上级和下级之间才存在一种权威关系。
Normally, seeds of Emmenathe penduliflora stay dormant for years and germinate only when a fire burns through their habitat.
通常，Emmenathependuliflora 的种子保持休眠状态数年，并且仅在大火燃烧通过其栖息地时发芽。
Other species take into account the changing conditions of light by performing their visual displays only when the light is favorable.
其他物种只在光线适宜时才会展示它们的视觉形象，以此来考虑光的变化情况。
Your jaw muscles activate sympathetically when you see me initiate my reach for the glass, but only when I am reaching to have a drink.
当你看见我伸手去拿水杯时，你下颌的肌肉感应性地活跃起来，但只是在我为了喝水而伸手拿的时候。
In general, your attitudes will be internally consistent only when the behavior is easy, and when those around you hold similar beliefs.
一般来说，只有当行为简单而且周围的人和你有相似的信念时，你的态度才会表现得与内在一致。
Tigers fight to death only when a tigress is defending her young, or when a tiger is guarding a tigress from the attentions of other males.
只有当母老虎在保护自己的幼崽时，或者当公虎在保护母老虎不受其他雄性动物的注意时，它们才会殊死搏斗。
For those who snore only when sleeping on their back, placing a pillow under their upper back may encourage them to change sleeping position.
对于那些仅在仰卧时才会打鼾的人，在他们的上背部放一个枕头可以促使他们改变睡姿。
Integral have these time-based technologies become to day-to-day existence that our dependency on them is recognised only when they fail to work.
这些基于时间的技术已经融入了我们的日常生活，只有当它们不起作用时，我们才会意识到我们对它们的依赖。
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