leech
n
1 small blood-sucking worm usu living in water and formerly used by doctors to remove blood from sick people 水蛭; 螞蟥.
2 (fig derog 比喻, 貶) person who hangs about other people hoping to obtain money, food, alcohol, etc 依附於他人希望獲得錢、 食物、 酒等的人.
3 (arch or joc 古或謔) doctor 醫生.
4 (idm 習語) cling/stick to sb like a `leech stay very close to sb; be difficult for sb to get rid of 依附於某人; 糾纏某人不放.
??? 情景例句
Well, the company has some financial problems. People there are all thinking of quitting.