评论
打印
1.These are pollutants or particles derived from human activity, or dust from other continents.
derive from 源自
A scholar derives knowledge from reading.
学者读书获得知识。
2.Their analysis included monitoring wind trajectories to detect how far the microbes may have travelled.
trajectory 轨迹
None of it has changed the trajectory.
没有任何东西改变我们的轨迹。
