Woollen cloth and timber were sent to Egypt in exchange for linen or papyrus.羊毛料和木材送到埃及以换取亚麻布或纸莎草纸.The Egyptians wrote on papyrus.埃及人书写用薄草纸.Since papyrus dries up and crumble, very few documents of ancient Egypt have sur...
不到一刻钟，夜晚的寒气就一扫而光。Within quarter of an hour the coldness of the night had gone.一刻钟以后我就得走了.I've got to go in a quarter of an hour.我敢保证, 你准得受一刻钟的罪.You will have a bad quarter of an hour of it, I assure you....
Experiments show a strong effect on the measured value if collimation angle is increased.实验表明,准光角增大会对测定值产生很大的影响.The error introduced by a finite collimation angle is a systematic one in apparent transmission.一定准光间所带来的误差是...