—— 请按键盘 空白键 开始游戏 ——

In darkness, we learn to cherish the light.
Quality is not a luxury; it is a necessity.
如果不衡量影响,我们只是在猜测可持续性。
"RNA interference is a fascinating process that has opened up new avenues for understanding gene regulation and has potential therapeutic applications."
森林的真正价值不能仅用板材英尺来衡量。