更安全的是，你要保证每个人都安全到位了，都离燃放点有到少3英尺的地方。
Better yet, make sure that everybody is safely positioned at least 3 feet away from the shooting point.
我们继承了一个已被污染的地球，但我们可以为保证我们的孩子能在比我们所生活的星球更清洁、更安全的环境中成长做点儿什么。
we inherited a polluted Earth, but we can do something to ensure that our children can grow up in a cleaner, safer planet than ourselves.
然后，我要买一套更舒适的新房子，然后存一些钱在银行里来保证它的安全，同时，如果有紧急情况发生时我也可以用这笔钱。
Then, I will buy a new house which is more comfortable and deposit some money in the bank to keep it safe and in the meantime, I can use it when emergency happens.
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