雷声前的闪电是灾难前警告的常见象征。
The lightning that precedes the thunder is a common image of the warnings that come before calamity.
林业的未来在于平衡经济需求与生态责任。
预测未来的最好方法就是创造未来。
The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect.
衡量矿业公司成功的真正标准是其如何平衡利润与环境责任。