脆弱 (cuì ruò): yếu kém

She appears very strong on the surface, but deep down she is actually very fragile; whenever she faces a setback, she secretly hides and cries.

Xiao Zhang has just started working, and his psychological resilience is still rather fragile; after being criticized a few words by his boss, he couldn't sleep all night.

The ecological environment in this area is very fragile; once destroyed, it is very difficult to restore in a short time.

The emotional foundation between them is still very fragile; they often quarrel over trivial matters and even end up talking about breaking up.

An infant's bones are extremely fragile; when holding a baby, you must support the head and neck with your hand, otherwise it is very easy to cause injury.