上一句英文用英文解释一下

Certainly. The sentence you provided, "People suffering from smiling depression may offer no hint of their problem to the outside world," means that individuals who have a condition known as smiling depression may appear normal or happy on the outside, but they are actually experiencing depression internally. They might hide their true feelings and struggles from others, and as a result, their mental health issues can be difficult to detect unless they choose to reveal them. This phenomenon occurs because these individuals maintain a facade of happiness or contentment in social situations while privately dealing with feelings of sadness, emptiness, or hopelessness.