1. Expression：hit a home run
Explanation 1：To do something that is very successful. （做了非常成功的事，获得成功）
Example：Our numbers have been down, so we really need to hit a home run this quarter in order to turn a profit for the year.
It was an unexpected interview question, but I really feel like I hit a home run with my answer.
Explanation 2：To make love.（做爱）
Example：They would hit a home run for an hour, maybe more, then he would pull slowly away and look at her, lighting a cigarette and one for her.
A：John, how long has it been since you hit a home run?
B：Shut up! It is none of your business.
2. Expression：hit the jackpot
Explanation 1：To win a large amount of money, especially in a lottery. （中大奖，赢得大笔钱）
Example：Stop wasting your money on lottery tickets—it's not like you'll ever hit the jackpot.
A: It seems that Mike has become rich overnight. Do you know how he managed to do it?
B: You didn’t know? He hit the jackpot in the lottery.
Explanation 2：To have great success and earn a lot of money from it. （大获成功）
Example：He must have hit the jackpot with the sales of his last gramophone record.
Celion Dion hit the jackpot by singing the theme song of Titanic.
Henry Small hit the jackpot in the new competition on TV and won over ￡ 50,000.