重要的是要为旅行提前做准备，并在旅行时采取预防措施。
It's important to prepare for your trip in advance and to take precautions while you are travelling.
学生通常需要提前为研讨会和辅导课准备工作，这可以采取研究讨论主题、写论文或解决问题的形式。
Students are normally expected to prepare work in advance for seminars and tutorials and this can take the form of researching a topic for discussion, by writing essays or by solving problems.
该举动比国际泳联预期采取的类似规定提前了三个月。
The move comes three months ahead of what's expected to be a similar ruling by the world governing body FINA.
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