如果你住在阳光充足的地方，在天气晴好的中午晒上10~20分钟（皮肤越黑，需要的曝光时间越长），就可以了。
If you live in a sunny area and spend 10 to 20 minutes (the darker your skin, the more exposure you need) during midday on a day when sunburn is possible, you should be set.
我们希望增加20%的流量，因为我们需要更多的曝光自己，以便我们每月能够建立8个更多的客户信息。
We want to increase traffic by 20% because we need more exposure so that we can generate eight more leads per month.
它的大光圈镜头可以摄入尽可能大的光量，所用技术并不需要笨重的自动对焦系统，曝光时间也是自动调节。
It has a wide-aperture lens to capture as much light as possible, and the technology requires no clunky auto-focus mechanism. It adjusts exposure time automatically.
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