1. Women, she believes, should take responsibility for the natural balance of their body chemistry.
    她认为女性有必要保持体内自然的化学平衡。

2. He changed his vocation from chemistry to music.
    他放弃化学业转而从事音乐。

3. She studies chemistry.
    她念化学.

4. Careful care of the body chemistry, she says, not only improves looks but also enhances energy processes and even expands awareness and mental function.
    她说，小心维护好人体的化学平衡不仅能改进外貌，而且也能增加活力，甚至能扩大意识和思维能力。

5. On a visit to Santa Fe in 1943, she asked why she couldn't see the picture he had just taken. During the next hour, as Land walked around Santa Fe, all he had learned about chemistry came together:
    1943年在去圣菲游览时，女儿问他，为什么她无法看到他刚刚拍摄的照片。在接下来的一小时里，兰德一边在圣菲游览，一边脑子里却汇聚着他学过的所有关于化学的知识。