1·You should believe firmly, in addition to dying, the grey hair is genetic, this is the ineluctable fact.
你应该坚信，除了染色外，白发是遗传的，这是不可避免的事实。
2·It is not pessimism, but an ineluctable reality.
不是悲观主义，而是一个不可避免的现实。
3·I would like to treat every day as vital as last day, it is not pessimism, but an ineluctable reality, The person is infinitesimal and helpless.
我愿意把每一天都看作是生命的最后一天，不是悲观主义，而是一个不可避免的现实，人是渺小而无奈的。