现在北约只在5个国家，为美国和盟国空军布设了大约200枚自由落体式核弹，而俄罗斯则有几千枚核弹头。

It now has only about 200 free-fall bombs, stationed with American and allied aircrews in five countries-compared with several thousand Russian warheads.

最近一次削减，将会使美俄两国各保持1550枚战略核弹头——即使这样，仍然超编，但比起冷战时期的几千枚还是少了许多。

The latest will leave America and Russia with 1,550 strategic warheads apiece—still over-armed, but down from many thousands more in the cold war.

载人航天运载火箭经历了从第一枚到第四枚发射的成功，为第五枚火箭发射打下了坚实基础。

The human spaceflight carrier rocket project had seen success in blast-off from the first rocket to the fourth one laying a solid foundation for the blast-off of the fifth rocket.

母的马蹄蟹在沙滩上挖掘浅坑，然后，每个母的在那里产下数万个小小的，蓝绿色的蛋，通常几千枚蛋一堆。

Each female digs a shallow pit in the sand, where she lays tens of thousands of tiny, blue-green eggs, usually in clusters of a few thousand.

获得这枚奖牌好比梦想成真。

Winning the medal was like a dream come true.