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　　 Tens of thousands of jellyfish were found covering San Francisco's Ocean Beach on Saturday morning. It's not clear what brought the so-called moon jellyfish ashore, but there is an explanation that the jellyfish have been washed up on the beach by a large overnight swell due to their inability of fighting the current.

　　上周六早晨，数万只水母惊现美国旧金山海岸沙滩，空前壮观。这些海月水母“攻陷”海岸的原因尚不清楚，但有猜测称它们乃不敌涨潮而一夜之间被冲上了海滩。