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Fluke
01
幸運
parasitic flatworms having external suckers for attaching to a host
02
幸運
either of the two lobes of the tail of a cetacean
03
幸運
flat bladelike projection on the arm of an anchor
04
幸運
a barb on a harpoon or arrow
05
幸運
a surprising piece of good luck
例
The whale's massive tail fin is called a fluke.