healthy

记忆“healthy”可以将其拆分为两个部分：“heal”和“-y”。想象一个“heal”（治愈）动作持续发生，使得状态保持“-y”（形容词后缀，表示性质），因此形成了“healthy”（健康的）这个概念。

healthy (adj.)

1550s, "being in a sound state;" also "conducive to health," from health + -y (2). Earlier in the same sense was healthsome (1530s). Related: Healthily; healthiness.

It is wrong to say that certain articles of food are healthy or unhealthy. Wholesome and unwholesome are the right words. A pig may be healthy or unhealthy while alive; but after he is killed and becomes pork, he can enjoy no health, and suffer no sickness. [Eliza Leslie, "Miss Leslie's Behaviour Book," Philadelphia, 1839]

Healthsome is from 1530s in the sense "bestowing health."

1. The birth of a live healthy baby is a truly blessed event.

一个健康活泼的婴儿的出生真是一件可喜的事情。

2. Was it just a temporary blip on an otherwise healthy growth curve?

这是否是原本良好的增长曲线中暂时的偏离？

3. The film opened to healthy box office receipts before rapidly falling off.

这部影片的票房收入开始的时候持续上涨，但是后来急剧下降。

4. Give yourself a healthy glow on our detox diet.

我们的解毒食谱将会让您容光焕发。

5. My department had a healthy interest in keeping expenses down.

我部门对维持低水平开支有浓厚兴趣。

【wholesome, fit, robust, strong, sound, tough, healthy, sturdy, vigorous, well】
这组词都有“健康的，强健的”的意思，其区别是：
wholesome: 多指能给人留下身体健康、思想健全或品德良好等印象。
fit: 既可指健壮又可指健全无病。
robust: 强调身体强健。
strong: 既指体格健壮，又指体力或精神上的力量。
sound: 侧重身体各部分或器官没有病，无任何缺陷，即健康。
tough: 着重指人的体格健壮。
healthy: 指身体无病，也可指身心健全、正常的。
sturdy: 侧重于结实的体格。
vigorous: 指人强健有力，精力充沛。
well: 仅指没有疾病，但不一定很健康。

【wholesome, healthful, healthy】
这组词都有“有益于健康的”的意思，其区别是：
wholesome: 常可与healthful互换并且更常用，更强调有益于、增进、促使、维持身体或精神的健康。
healthful: 比healthy更常用。
healthy: 只在非正式文体中可与healthful换用