Stay+ adjectives mean to stay in a certain state, and staying healthy means staying healthy.
Keywords: health
Phonetic symbol: English [? Helθi] beauty [? helθi]？
Explain in detail:
Health; Robust; Good for health; Reflect health; Normal and reasonable; Prosperity; Big and seemingly successful;
Phrase collocation:
Healthy eating? Healthy diet
Healthy appetite? Greedy appetite
Example:
Although my uncle is old, he looks very strong and healthy.
Although my uncle is old, he still looks strong.
Healthy shoots should form strong grafts.
Healthy shoots can grow into strong scions.
His innermost thoughts are unhealthy.
The idea in his mind is unhealthy.