1 sentence

1. 飓风特别具有挑战性，因为它们是如此复杂和相对罕见的事件。

   jù​fēng tè​bié jù​yǒu tiǎo​zhàn xìng, yīn​wèi tā​men shì rú​cǐ fù​zá hé xiāng​duì hǎn​jiàn de shì​jiàn.

   Hurricanes are particularly challenging because they are such complex and relatively rare events.

   Source: CCMatrix