The theory behind double-checked locking is perfect.
双重检查锁定背后的理论是完美的。
All spectators must stay behind the double-fencing along the route.
所有沿着路线的观众必须站在两层围篱之后。
Or at least that's the concept behind Northrop Grumman's proposed Double Eagle mission.
或者至少这是诺斯罗普-格罗曼提出双鹰计划后的设想。
Or at least that's the concept behind Northrop Grumman's proposed Double Eagle mission.
或者至少这是诺斯罗普-格罗曼提出双鹰计划后的设想。
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