用微笑面对一切~什么都装作不知道ε确实很低调↘外表看上去很坚强，其实内心却很脆弱

1.With smiling face all pretending not to know what are really very low-key ↘ ε look very strong, in fact a rather fragile hearts

or

2.Pretends with the smile facing all ~ anything not to know that Epsilon the low key ↘ semblance seems very strong truly very much, actually the innermost feelings are very actually frail