A fastlock is acquired immediately, with no waiting.
快锁是立即被请求的，没有等待。
2
While all of the lock acquisitions will be uncontended and therefore fast, the compiler can actually eliminate the synchronization entirely using lock elision.
虽然所有锁的获得都是非竞争的，所以很快，但是编译器实际上可以用锁省略把同步完全清除掉。
3
Each laser has an integral radar to help it lock automatically on to the small, fast vessels usually used by Somali pirates.