字面：被強迫、沒有報酬的勞動
這一支就是畫面本身，沒有經過任何比喻。
noun · B2
Work that people are forced to do without pay and without being free to stop or leave; the same words can also mean the people who are forced to do that work.
奴隸勞動；奴工
核心畫面
One picture can hold both uses: a person working inside someone else's plan, who gets none of their own time back. No wage comes out at the end, and there is no door to leave by. Everything this word does comes from that missing wage and that missing door.
可以想成這樣一個畫面：一個人在別人的安排裡做工，做完之後，什麼也沒有拿回來。沒有工資，也沒有一扇可以走出去的門。這個…更多收起
可以想成這樣一個畫面：一個人在別人的安排裡做工，做完之後，什麼也沒有拿回來。沒有工資，也沒有一扇可以走出去的門。這個詞的兩種用法，都是從「拿不回自己的時間」這個畫面長出來的。Two branches
誇飾：借這個畫面來抱怨薪水
把核心畫面裡最刺眼的一點——做了很多、拿回很少——整個搬過來，用在一份其實可以辭掉的工作上。正因為原來的畫面很重，這句抱怨才夠用力，也才只適合口語。
noun · B2
Work that pays you far too little for the time and effort it takes — said as an exaggeration when someone feels a job is dull, heavy and badly paid.
血汗工作；做白工