The crews will fly on Russian Soyuz rockets until and unless U. S. commercial companies develop private space taxis to ferry them to the International space Station.

这个团队将参与俄罗斯“联盟”号火箭的飞行任务，知道美国金融公司开发出其专有的航天“的士”将飞往国际空间站。

youdao

Unless and until additional U. S. sanctions are announced, it's hard to judge how much they will hurt Russia.

除非直到美国宣布新的制裁，否则很难判断俄罗斯的受创程度。

youdao

Scotland couldn't know if that's true unless and until it gave it a try.

BBC: Balance of payments

Why would anyone choose a Southern Cross home when it is unclear who will be running the home in a few weeks time - and when, for all Mr Fisher's protestations that wholesale closures of homes are very unlikely, he can't guarantee stability unless and until it's creditors guarantee that?

BBC: NHP controls fate of Southern Cross

The Company does not intend to comment further regarding the evaluation of Mr. Riggio's proposal, unless and until definitive agreements for a transaction are entered into or the Strategic Committee determines to conclude the process.

ENGADGET: Barnes & Noble founder pondering bid to buy back retail business, hive off Nook Media