only when

They were left with egg on their faces when only ten people showed up.

只有十人到场，他们感到很丢面子。

You cannot live your children's lives for them; you can only be there to pick up the pieces when things go wrong.

你不能替孩子过活，只能在出现问题时帮忙解决。

They reminded me that one can be strong only when united with the collective.

他们使我想到,只有和集体结合才有力量.

Thus, noncontinuous emission limitations were appropriate only when continuous controls were infeasible.

因此, 非持续性排放限制只有在持续性控制技术变得不可行时才是适当的.

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。

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。

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。

'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。

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

无放流式调节器只有在通至调节机构的管道排气时才消耗空气.

She expands only when being praised and flattered.

她只有受到表扬和奉承的时候才喜笑颜开.

In those days most people left school when they were only fifteen years old.

那时候，大多数人上学只上到十五岁。

He could rest only when he was too drained of energy to fret further.

只有当他精疲力竭无力再操心时他才能得以休息。

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。

Life has a value only when it has something valuable as its object.

目标有价值，生活才有价值。(黑格尔)

"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。

Generally, users act stupidly only when applications treat them stupidly.

总之, 用户只有在程序愚蠢地对待他们时,才会愚蠢地行事.

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 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.

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。

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。

I'll only relax when I know you're safe.

我只有知道你安然无恙才会放心。

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 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。

Only when it finds nothing wrong thereabouts does it feel at ease.

随后,它知道没什么异常,安心了.

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 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 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。

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。

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。