词义辨析：fragile, brittle, frail
fragile: 除指易碎外，还指人身体虚弱，动辄就得病
brittle: 指没有弹性或伸缩性的脆性材料，暗示受压或被扭曲时易碎
frail: 多指人体虚弱，也指某物不耐用，易碎易损
Kino had wondered often at the iron in his patient, fragile wife.
他这个耐心，纤弱的妻子竟会有钢铁般的意志，这常使基诺感到惊奇。
