有保证的公平对待
Guaranteed fair treatment
沙士的教训
the lessons learned from the Sars outbreak
沙丘的下游斜坡面
downstream face of the dune
沙漠化对沙尘暴的贡献
contribution of desertification to dust storm
沙玛西斯泉的战利品
spoils of the fount salmacis
salmacida spolia
沙棘能源林的营造技术
Plant Technique of Sand Thorn Energy Forest