Conservable
a. 可保存的；conserve的变形
✅ 同义词
🗣️ 情景例句
I'm not sure I'm up to it.
我不能肯定我是否能做得来。
He lives twice who lives well.
生活得好的等于生活了两次。
do in fact run out of energy in accordance with the second law of thermodynamics (whether the whole universe does so is a moot point at present).
也都会消耗完其能量（整个宇宙是否如此，目前尚有争论）。