【明報專訊】Farmers growing hay for their cattle don't wait for a rainy day before going to their fields to harvest (收割) it. Wisely, they take full advantage of sunny days to cut and gather it. That's what make hay means, and from that, make hay while the sun shines refers to taking advantage of a favourable situation to benefit from it. "Everyone has gone to bed so I'm going to make hay while the sun shines and study while it's quiet," Elliot said.