“他们一旦犯错，就会犯大错。”美国大学协会主席罗伯特·罗森茨威格说。
"When they make mistakes, they make big ones," says Robert Rosenzweig, president of the Association of American Universities.
一旦空间站建成，毕格罗公司不仅要证明它可以保障食物、水和空气的及时供应，而且在出现各种不可避免的小故障时，他们能搞得定。
Once the stations are up, Bigelow still needs to demonstrate that it can juggle the logistics of supplying food, water and air, as well as fix the inevitable glitches that will arise.
一旦空间站建成，毕格罗公司不仅要证明它可以保障食物、水和空气的及时供应，而且在出现各种不可避免的小故障时，他们能搞得定。
Once the stations are up, Bigelow still needs to demonstrate that it can juggle the logistics of supplying food, water and air, as well as fix the inevitable glitches that will arise. Mr.
一旦空间站建成，毕格罗公司不仅要证明它可以保障食物、水和空气的及时供应，而且在出现各种不可避免的小故障时，他们能搞得定。
Once the stations are up, Bigelow still needs to demonstrate that it can juggle the logistics of supplying food, water and air, as well as fix the inevitable glitches that will arise.Mr.
多洛式法则，如果物种的特质一旦失去，就意味着这种特质的永远失去。该法则由科学家路易斯•道罗在19世纪提出。
Dollo's Law, a theory proposed by the scientist Louis Dollo in the 1800s, states that when a particular trait is lost in a species, it never comes back.
然而，一旦该项目停止给罗巴提供帮助，如何确保他不会回到严重营养不良的状态，将是一大挑战。
Once Roba is discharged from the programme, however, the challenge will be to ensure that he does not fall back into a condition of severe malnutrition.
一旦在现场的秘密情报局特工报告确认说武器交易即将开始，罗巴克上将就下令皇家海军切斯特号军舰驶入安曼湾巡逻。
Once news from MIA's man in the field reached them that the weapons exchange would indeed take place, Admiral Roebuck ordered H. M. S. Chestier to patrol the Gulf of Oman.
一旦伽罗瓦开始研究，他有没有犯过错误，最终走进了死胡同？
And once Galois had started to work on it, had he made any false starts, gone down any dead ends?
一旦被吸纳进这个组织，傲罗就需要接受超过3年时间的训练（凤凰社，第二十九章），这包括了隐藏，伪装，秘密行动以及跟踪（凤凰社，第三章）。
Once accepted into the program, Auror training takes a further three years (OP29), and includes Concealment and Disguise as well as Stealth and Tracking (OP3).
一旦被吸纳进这个组织，傲罗就需要接受超过3年时间的训练（凤凰社，第二十九章），这包括了隐藏，伪装，秘密行动以及跟踪（凤凰社，第三章）。
Once accepted into the program, Auror training takes a further three years (OP29), and includes Concealment and Disguise as well as Stealth and Tracking (OP3).
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