IT IS no secret Sydney is being invaded by moths. Swarms of migrating bogongs have been quivering, crawling and wriggling into crevices across the city. ：“John Howard’s Sydney office has become a popular spot for migrating bogongs. ” SMH，10.10.2007

Unskilled migrants swarm to the city

 Bogongs:一种飞蛾。在堪培拉特宾比拉风景区有Bogong 岩洞，岩洞中呈现的是最古老的生活工具。Bogong蛾是土著居民重要的食物来源。

quivering 颤抖的

wriggle v.宛蜒行进, 扭动