1. This is a rare occurrence as our climate seldom goes to extremes.
    但是在我们这里，气候很少发生异常，河水极少泛滥。

2. However, even if prediction becomes possible, people who live in areas where earthquakes are a common occurrence will still have to do their best to prevent disasters by building structures that are resistant to ground movement and by being personall
    然而，即使可以预测，居住在地震频发区的人们还是应尽力预防灾难，办法是建造能够抵抗地表运动的房屋，同时做好个人准备。

3. Robbery is now an everyday occurrence.
    抢劫的事现在每天都有.