Tetrahedral
a. 有四面的, 四面体的
🗣️ 情景例句
He ventured to speak to her.
他鼓起勇气向她说话。
I asked him to do it for me, but he wouldn't.
我请他帮我做，但是他不肯。
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）。