计算机图像技术能在作物出现明显症状和不可逆转伤害前及时检测出作物的胁迫情况。
Imaging techniques that allow immediate detection of stress-situations, before the visual symptoms appear and the adverse effects become, are established.
要制止或逆转道路交通伤害及其造成的伤残和死亡的上升趋势，我们必须做得更好才行。
We must do better if we are to halt or reverse the rise in road traffic injuries, disability and deaths.
限制海洋酸化，在其对世界海洋——和人类——所依靠的食物链造成不可逆转的伤害之前，刻不容缓。
Time is running out to limit acidification before it irreparably harms the food chain on which the world's oceans—and people—depend.
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