Harshnesses
(harshness 的復數) n. 粗糙事物, 刺耳, 嚴肅
??? 情景例句
Good afternoon, sir.
下午好。
Don't drop that bottle on the floor.
別讓那只瓶子掉到地上。
Normal people tend to forget this process unless and until they are reminded of it.
衰老的過程，不經提起，正常人容易忘記；一經提醒，才會記起。