你要想去旅行就必须征得父母的同意。
You'll have to get your parents' agreement if you want to go on the trip.
你去伦敦之前应该得到你父母的同意。
You should get your parents' agreement before you leave for London.
如果你不满18岁，没有得到父母的同意，一些地方是不允许被穿刺的。
If you're under 18, some places won't allow you to get a piercing without a parent's consent.
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