only when

It was only when he finally drifted off to sleep that the headaches eased .

只有当他最后迷迷糊糊睡着时，他的头痛才有所减轻。

Only when the telescope is inclined at an angle of thirty degrees can you see that star .

只有当这架望远镜以30度角倾斜时，你才能看到那颗星星。

He can be very helpful , but only when it suits him .

有时候他非常肯帮忙，不过那得他觉得合适。

The company 's troubles started only when it diversified into new products

当公司增加新产品时，麻烦才开始的。

Such events occur only when the external conditions are favorable .

这种事情只有在外部条件有利时才会发生。

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条件成熟才会降息。

Only when each logical step has been checked by other mathematicians will the proof be accepted .

只有每一逻辑步骤都被其他数学家验证之后，证明才能成立。

He was rescued only when an exhausted friend swam ashore

当一个精疲力尽的友人游上岸后他才获救。

There is no rudder as such , so the craft can be steered only when under power .

没有真正的方向舵，所以只有在动力驱动的情况下才能操控船只。

' Are you jealous ? ' — ' Only when I 'm not in control , ' he says , not missing a beat .

“你眼红吗？”——“除非我把持不住自己，”他毫不犹豫地说道。

Only when agriculture is fully developed can industry have sufficient materials and markets .

只有农业发展了，工业才有足够的原料和市场。

Only when a reservoir is built here can we solve our irrigation problem .

除非在这里修个水库，才能解决灌溉问题。

It is spring only when all the flowers are blooming .

万紫千红才是春。

Only when food and clothing are enough can one behave properly .

衣食足而知礼仪。

Only when our theory combines with practice can the former become areliable knowledge .

只有当理论与实践相结合时，它才变成经得住考验的知识。

Only when they got to a safe place , could we regard ourselves as having done our duty .

只有当他们到达安全地方的时候，我们才能认为自己尽到了责任。

Money is an acquisitive instrument only when it is exchanged for some other economic good .

仅当货币交换其它经济财时，它才是一种营利工具。

The non-bleed controller uses air only when exhausting the line to the controlled device .

无放流式调整节器只有在通至调节机构的管道排气时，才消耗空气。

She looked quite young from a distance and only when I saw her at close quarters did I realize how old she really was .

从远处看她显得很年轻，但走近一看，我才明白她已有很大年纪了。

It 's a dramatic endorsement for a technology most people think about only when their smartphone goes dark .

这对于项大多数人只有在他们的智能手机黑屏的时候才能想起的技术是一种令人激动的支持。

This task is simultaneously ethical and political because it can be discharged only when each takes it upon herself or himself and only when it is accomplished together with others .

这项任务同时具有道德性和政治性,因为只有当每个人都承担起自己的责任并与其他人合作时这个任务才能完成。

But herd immunity works only when nearly the whole herd joins in ．

但是，只有当几乎所有的群体都加入进来时，群体免疫才起作用。

One group was asked to seek out an interaction with its waiter ; the other , to speak only when necessary ．

一组被要求主动跟服务员互动；另一组只在必要时发言。

Only when Quatchi touched his nose to its head did it walk away ．

直到夸奇用鼻子碰到它的头时,它才走开了。

And only when we are enjoying the whole process of unlocking our self-improvement power will we realize that we 're beginning to take things light and become happy .

只有当我们享受着释放自我提升能力的整个过程时,我们才会意识到我们开始轻装上阵,变得快乐起来。

The doctor told him he must not walk or move his arm ， and to speak only when it was necessary .

大夫告诉他不能走动也不能动胳膊，只在必要的时候才能说话。

I am alive only when I am with you . When I am alone , the most dazzling .

只有跟你在一起的时候我才是活着的，我一个人的时候，就连最耀眼的太阳也失去光彩！

Hearing this , Confucius turned to his disciples and said : " Whatever you do , only when you persevere of perfection . This is the truth that this hunchbacked old man has taught us . "

孔子听了，回头对他的弟子说：“无论做什么事情，只有锲而不舍，专心致志，才能达到这样出神人化的境界。这就是这位驼背老人告诉我们的道理。”

Hearing this , Confucius turned to his disciples and said : " Whatever you do , only when you persevere10 with concentrated attention and devotion , can you achieve the acme11 of perfection . This is the truth that this hunchbacked old man has taught us . "

孔子听了，回头对他的弟子说：“无论做什么时候，只有锲而不舍，专心致志，才能达到这样出神人化的境界。这就是这位驼背老人告诉我们的道理。”

Only when the economic sustainable development is realized , can the overall sustainable development system form .

只有实现经济可持续发展，才能形成整个系统的可持续发展。