目前有一段时间，没有哪个国家的海军和空军敢和美国叫板。

For some time now no navy or air force has posed a threat to the United States.

youdao

海军陆战队没剩多少时间了。

Time is not on the marines' side.

youdao

盖茨先生称“过去六十年的大部分时间内美国海军在西太平洋地区享有的活动庇护权”受到了威胁。

At risk is what Mr Gates has called "the operational sanctuary our navy has enjoyed in the western Pacific for the better part of six decades".

youdao