stay the same：保持不變、保持原樣。
You can change or stay the same. There are no rules to this thing.
你可以改變或保持現狀，人生沒有任何規矩。
It is not known if that schedule will stay the same.
還不知道這樣的安排是否會保持不變。
However, some of the core will stay the same.
不過，一些核心將保持不變。
You can't expect it to stay the same.
你不能期待它一成不變。
Your physical shape always stays the
same.
你的體態總是保持不變。