Unfortunately, if a future API revision lets you add elements of types other than JMenu to a JMenuBar, it will no longer be necessary, or even safe, to cast the returned elements to JMenu.

不幸的是，如果将来的API修订版允许将除jmenu类型之外的元素添加到JMenuBar，就不再需要把返回的元素强制转换JMenu了。

youdao

On the other hand, to be alone on purpose, having rejected company rather than been cast out by it, is one characteristic of an American hero.

而另一方面，故意选择独处，拒绝别人的陪伴而非为同伴所抛弃，这正美国式英雄的一个特点。

youdao

For no reason other than to have something to do, he cast his view outside his little world, using the control room's scanners to check on traffic elsewhere in the solar system.

没来由的仅仅是为了做点什么，他将视线投向他小小的世界的外面，通过控制室的扫描仪察看太阳系其它地方的交通。

youdao

This is a situation where the first stone simply must be cast by someone other than the lords of baseball.

NPR: MLB's Own Performance-Enhancement Problem

In 1951 only 3% of votes were cast for candidates other than those representing the Conservative or Labour Party.

ECONOMIST: Electoral trends: Why Cameron coalesced | The

The Center for Security Policy has analyzed more than 75 votes over the past decade cast by Mr. Kerry and other senators.

CENTERFORSECURITYPOLICY: Disqualified? John Kerry��s record on national security