A helicopter was later dispatched to the island to investigate, but the Sentinelese drove it away by shooting arrows up at them.

随后，一架直升机被派往该岛进行调查，但森蒂纳尔人向他们射箭，将直升机赶走了。

The first, obvious way is just using the up arrow, and slowly going through all your history, looking for these matches.

第一种显而易见的方法就是使用向上箭头，慢慢浏览所有历史记录，寻找这些匹配项。