"that's the stuff" in Chinese (Simplified)
就是这个！- 就是这样！
Definition
这是一个非正式表达，用于表示满意或认可，尤其当事情正合自己心意或正是自己所要时。
Usage Notes (Chinese (Simplified))
非常口语化，带有欣喜或认可的语气。多用于食物、美味、成功的解决办法或达成目的时。不是字面意思，不能用于正式场合或指具体物品，只表达满足感。
Examples
After drinking cold water on a hot day, she said, "That's the stuff."
大热天喝了冷水后，她说：“**就是这个**！”
He took the first bite of pizza and exclaimed, "That's the stuff!"
他咬下披萨的第一口，说：“**就是这个**！”
"Here’s your morning coffee." "That's the stuff!"
“你的早晨咖啡来了。”“**就是这个**！”
Finishing the project right before the deadline—that's the stuff!
项目截止前刚好完成——**就是这个**！
You finally got the joke! That's the stuff.
你终于听懂笑话了！**就是这样**。
A big win for the team tonight. That's the stuff!
今晚球队取得大胜。**就是这样**！