只有当

This is when only one side of the knee has been damaged by osteoarthritis.

这是当只有一方的膝盖已经损害了骨关节炎。

Many Chinese people need to konw that when an English-speaking person asks you about your health, he is probably only doing so out of politeness.

许多中国人需要知道，当一个以英语为母语的人要求对您的健康，他是大概只有这样做，出于礼貌。

This is the case when only a few cells are hit, and if they are killed outright.

当只有一些细胞是击中的时候，这是情形，而且如果他们率直地被杀。

When we are pained pleasure, then, and then only, do we feel the need of pleasure.

当我们让快乐遭受痛苦时，这时，只有这时，我们才感觉到快乐的必要。

But, when in the case only has the bones of the dead preserves, the DNA technology appears palely, the various countries medical examiner scientists all hoped also can use the DNA technology in the skeleton examination, obtains the accurate conclusion.

但， 当在案件只有死的蜜饯的骨头， DNA 技术苍白地出现，全部被希望还能使用DNA 技术在最基本的考试的各种各样的国家医疗检验员科学家，获得准确结论。

When there are just two commodities one obtains the symmetric payoff matrix.

当只有这两种商品时，获得一个对称的支付矩阵

"When you are in the pennant race, you don't feel anything," Pena said, as if to further the theory."You don't feel any pain. There's only one thing on your mind."

"当你在争夺冠军的路上时，你不会有任何的感觉"小波进一步解释著他的论点"你不会感到任何的痛，在你心里，你只有想著一件事"

Only 1 in 100 of you will become adept enough to knock me off my perch and when you can you won't.

只有1比100的你将成为善于足以敲我在我的鲈鱼，当你可以不会。

Its vision devices were completely inadequate in combat. When buttoned up, the crew was limited to small armored glass viewing slits, and in the case of the turret crew, a periscopic sight with a very limited viewing angle.

在战斗中，T-26的瞄准具设计非常不足，当关上舱盖后，乘员只能使用装甲玻璃的观察缝，炮塔人员只有一具视角有限的潜望瞄准镜。

The worst situation is when the personage is with full knowledge on the point of doing the deed, and leaves it undone. It is odious and also (through the absence of suffering) untragic; hence it is that no one is made to act thus except in some few instances, e.g. Haemon and Creon in _Antigone_. Next after this comes the actual perpetration of the deed meditated.

最坏的情况是当角色知道所有情况，在行动的一霎那放弃了，这种情况令人厌恶，并且不具悲剧性；因此所有角色都不能如此行动，只有极少数情况可以例外，比如《安提戈涅》里的海蒙和克瑞翁，此后真正的坏事才开始被谋划。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。