If an application consists of three Windows (for example, a login window, a text-viewing window, and a file-viewing window), each is typically represented by a different Activity class.

如果一个应用程序由3个窗口(例如，一个登录窗口、一个文本查看窗口和一个文件查看窗口)组成，那么每一个窗口通常用一个不同的Activity类来表示。

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Japan: Visitors marvel at Asia's largest aquarium viewing window at the Okinawa Churaumi aquarium.

日本冲绳，游客在冲绳美之海水族馆号称亚洲最大的观景窗前流连忘返。

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Add enough add-on features and you can reduce the viewing window to a size of a postage stamp, but there is probably no better overall browser.

它添加了足量的附加组件，全部打开可以把显示窗口压得只有邮票大小，不过也许真的找不到一款更优秀的全能浏览器了。

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That cabin is a 14-ton spherical steel capsule only two meters in diameter, with a single,half-meter-wide circular plastic window for viewing.

VOA: standard.2010.06.21

The service, called Home Premiere and available first in April on DirecTV, will air movies that have opened in theaters as recently as two months previously, which makes them fairly hot commodities under the impenetrable set of viewing-window rules that now dictate when theatrical releases can be seen in the home.

FORBES: Movies in your home, and for only thirty bucks

The bar intrudes into available desktop viewing space inside the browser and needs re-loading every time the user opens a new window, slowing surfing considerably.

CNN: Digital wallets attempt to save time, headaches

The experience went from one of exploration in the tech demo to one of gimmickry in TF2 -- the game's VR Mode is little more than a new window for viewing the game, and has almost no impact (at least in our demo) on gameplay.

ENGADGET: Playing an actual game with Oculus Rift: hands-on with Valve's Team Fortress 2 'VR Mode'