"overboard" in Chinese (Simplified)
落水过头（比喻）
Definition
“Overboard”指从船上落入水中，也可以指做事过头、太极端（比喻用法）。
Usage Notes (Chinese (Simplified))
字面意思有关船只，常用于落水。在实际生活中，多见于“go overboard”，比喻做事过头，常见于口语和非正式书面语。
Examples
The sailor fell overboard during the storm.
水手在暴风雨中**落水**了。
Don't throw anything overboard.
不要把东西**扔到水里**。
Someone shouted, 'Man overboard!'
有人喊道：“有人**落水**！”
I think you're going a bit overboard with the decorations.
我觉得你在装饰上有点**过头**了。
She tends to go overboard when she's excited about something.
她一高兴就容易**做得太过**。
Wow, you really went overboard on the gift!
哇，你送的礼物真的**太夸张**了！