TSUMUGU · TOCFL C1 (est.) · 詞
中肯
ㄓㄨㄥˋ ㄎㄣˇ · zhòngkěn
adj — apt, pertinent, right to the point
字源 FORM — what the parts do
中to hit, to strike home (命中)zhòng
肯the flesh fast to the bone (肯綮)kěn肯 here is not "willing" but its old sense — the spot where flesh joins bone, the crux
中肯，打中的中，肯定的肯。
故事 STORY — a scene to remember it by
一句話，正中要害。
One sentence lands its hit (中) right on the bone-knot (肯) — the crux, nothing wasted.
字源記憶法
關 · Related
切qièzhòngto cut straight to it — the same striking-home sense要害yàohàithe vital point that words land on