Accidental opportunities in scientific development are reserved only for those who persevere.
科学发展中的偶然机会，只会留给那些坚持不懈的人。
该句使用被动表达are reserved for，突出机会属于特定人群的逻辑关系。
"One must never abandon their journey because of minor setbacks."
"However, perseverance pays off."
"If you fall a hundred times, you must stand up a hundred and one times!"
"Persistence is crucial on the path to success."
"With enough perseverance, even an iron rod can be ground into a needle."