"lose your lunch" in Chinese (Simplified)
呕吐
Definition
呕吐；通常因为感到不适或恶心而把胃里的食物吐出来。
Usage Notes (Chinese (Simplified))
这是一个非正式且带点幽默色彩的说法，表示“呕吐”。常用于因晕车、恶心或闻到恶臭时，并非指不吃午饭。
Examples
I felt so sick on the boat that I almost lost my lunch.
我在船上觉得很难受，差点**呕吐**。
The horrible smell made me want to lose my lunch.
那股难闻的味道让我想**呕吐**。
He looked so pale, I thought he might lose his lunch at any moment.
他看起来很苍白，我以为他随时都可能**呕吐**。
The roller coaster was so wild, I totally lost my lunch afterwards.
过山车太刺激了，我下来了就**呕吐**了。
If you see that video, you might just lose your lunch!
你要是看了那个视频，可能会直接**呕吐**！
Wow, that story was so gross I nearly lost my lunch just hearing it.
哇，那故事太恶心了，我光听都差点**呕吐**。