sinker

音标发音

Whether or not he knew that Easter was coming up shortly was unclear, but he had a well-attuned marketing sense, and we took the bait: hook, line and sinker.
我不清楚他知不知道复活节就快到了，反正他颇有商业头脑，结果我们就上钩了：咬钩，上线，沉底儿。
3：When Joe came back we swallowed hook, line and sinker his stories of all the overseas battles he'd been in. Later we found he'd spent the whole time as an army cook at a base here in America.
他说：当初Joe复员回乡时我们听了他在海外作战的故事全都信以为真。后来我们才发现原来Joe一直在美国本土的一个基地当部队炊事员。既然Joe是在美国的军事基地炊事员，所以他根本没去海外，也没上前线打仗。他说的那些英勇战斗故事全是胡编的，而他的朋友们起初都信以为真，可见这里的hook, line and sinker用来说全盘听信旁人的谎言。
This experiment is neat because it shows the different gradations of self-deception, all the way up to its purest form, in which people manage to trick themselves hook, line and sinker.
这项实验干净利落地说明了自我欺骗的不同层次，人们逐步从头至尾地欺骗自己。

"Google has joined hook, line and sinker with the propaganda regime of Beijing, " Smith said.
FORBES: Magazine Article
He's pretty special when you could throw cutter, sinker, four-seam, hook, changeup, and on both sides of the plate.
NPR: Lester Pitches 1-Hitter, Red Sox Top Blue Jays 5-0
Reliever Hugh Casey delivers a sinker (some say illegal spitball) to Yankee batter Tommy Henrich, who swings and misses for strike three.
FORBES: Magazine Article

You can use hook, line, and sinker to emphasize that someone is tricked or forced into a situation completely.