Railroad stations or airports--Grandpa always tells us he'll get here by himself.
无论是火车站还是机场,爷爷总是说他会自个儿设法到这 。
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)。