1. Expression：jump ship
Explanation：To suddenly abandon one's post on a ship, as of a sailor.（棄船潛逃）
Example：No one has been able to find that missing sailor so they think he probably jumped ship.
One of the deckhands jumped ship at the last port.
2. Expression: run a tight ship
Explanation：To keep a place, group, or organization very well-organized and operating efficiently. （要求嚴格，紀律嚴明）
Example：I like to run a tight ship around here. That means that you'd better be here at 8:30 and you don't get off work until 5:30. No coming late or going home early! And you don't take more than 30 minutes for lunch. Do you understand?
我喜歡在這里實行嚴格的紀律,這就是說,你們最好8:30 就到這里,5:30 以前不能下班。遲到早退是不行的。午飯時間不能超過半個小時，明白了嗎？
I'm trying very hard to run a tight ship here, but that guy who was hired two months ago has been late almost every morning and one day took more than two hours for lunch. He has left me with no choice but to fire him.
Jane sure ran a tight ship around here. The department has devolved into chaos without her leadership.
Shaona was running a tight ship and didn't waste time on small talk.
Andy is totally organized and totally confident. He runs a tight ship and he does a great job.