化学是一门一直贴近我内心的科学,我以喜悦和热情将一生奉献给了它。
森林的真正价值不仅仅以木材的板英尺来衡量,还在于它所维持的生命和生态系统。
The founders of a new colony, whatever Utopia of human virtue and happiness they might originally project, have invariably recognized it among their earliest practical necessities to allot a portion of the virgin soil as a cemetery, and another portion as the site of a prison.
To create is to think in a loud voice.