有一段时间，美国的力量曾遭到苏联的制衡，但自从冷战结束之后，美国已经成为单极世界的唯一超级大国。

For a while, U.S. power was checked by the Soviet Union, but since the end of the Cold War, America has been the sole superpower.

youdao

自从我们提供给客户软件的架构文档，已经有一段时间了，客户渴望看到一些进展。

The customer was eager to see some progress, as it had been a while since we'd given them the software architecture document.

youdao

标准计时器api作为Linux内核的一部分已经有很长一段时间了(自从Linux内核的早期版本开始)。

The standard timer API has been part of the Linux kernel for quite some time (since the early versions of the Linux kernel).

youdao

标准计时器api作为Linux内核的一部分已经有很长一段时间了(自从Linux内核的早期版本开始)。

The standard timer API has been part of the Linux kernel for quite some time (since the early versions of the Linux kernel).

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