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.
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。
First, you'll need a non-digital watch in working condition and a sunny day.
首先，你需要一个正常工作的机械表，天气必须是晴天。
First, you'll need a non - digital watch in working condition and a sunny day.
首先，你需要一个正常工作的机械表，天气必须是晴天。
Good thing the weather is sunny today. We don't need to spend a whole day inside.
不错的是天气今天很晴朗。我们不用待在家里一整天了。ꦤ。
Good thing the weather is sunny today. We don't need to spend a whole day inside.
不错的是天气今天很晴朗。我们不用待在家里一整天了。ꦤ。
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