名詞 sinker:

1. a small ring-shaped friedcake
   同義詞：doughnut, donut
2. a weight that sinks (as to hold nets or fishing lines under water)
3. a pitch that curves downward rapidly as it approaches the plate

1. John was so easily fooled that he fell for Joe's story hook, line and sinker.
   約翰是那么容易受騙，竟毫不懷疑地相信喬的話。
2. What I said was untrue but he fell for it/swallowed it(ie believed it) hook, line and sinker.
   我所說的并非實話，他卻完全信以為真。