to be in a situation where one makes a lot of money with little effort
处于一种通过少量努力赚取大量金钱的状态 (Chǔyú yī zhǒng tōngguò shǎo liàng nǔlì zhuànqǔ dàliàng jīnqián de zhuàngtài)
"He’s been riding on the gravy train since he took over the family business."
"自从接管家族企业以来，他一直在格雷维火车上。" (Zìcóng jiēguǎn jiāzú qǐyè yǐlái, tā yīzhí zài **géléiwèi huǒchē** shàng.)
to be too proud or self-centered
to begin to improve after a difficult period
to take a subordinate role to someone else
to maintain a happy home while others are away
to take responsibility for doing something wrong
to go to ground; to take cover or hide
