believe in
1．consider sth．to be true；have faith or trust in相信…是真的；信赖；信仰
Christians believe in God．基督徒信仰上帝。
I don't believe in him．我不信任他。
2．favour； support the idea of赞成；支持；主张
His parents don't believe in sending him to school too early．他的父母不主张太早送他上学。
He believes very strongly in female emancipation．他坚决主张妇女解放。
I believe in keeping early hours．我相信早睡早起有好处。
She believes in plenty of fresh air and exercise．他相信大量的新鲜空气和锻炼有好处。