Dars
abbr. differential absorption remote sensing (laser) 差分吸收遠程感知（激光）
??? 情景例句
It was a gradual process, involving many factors.
這是個漸進的過程，涉及到方方面面。
What sort of guarantees are there against late delivery?
懲罰延遲發貨有什么保證呢？
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons.
歷史學家迄今認為日歷是隨農業的問世而出現的，因為當時人們面臨著了解四季的實際需要，