Scientists developed a craggy super-water-repellant coating made of nanoparticles covered with an organic , hydrophobic compound .
科学家们利用表面覆盖了某种有机疏水化合物的纳米颗粒开发出一种粗糙表面的超级防水涂层。
From its hilltop vantage point , we gaze over an unbroken green sea in which craggy hills loom on far horizons like tsunamis .
从山顶制高点我们远眺连绵的绿色海洋,地平线上起伏的远山像是海啸的排浪。
As the train bisected california , the impressions mirrored the country east of the continental divide : craggy mountains and the ghosts of gold mines became fertile cropland until once again we rolled through industrial yards , these lining san francisco bay .
Mr brown , by contrast , can come over as craggy and brooding . His friends say he is great fun in private , but he does not convey warmth or ease to the electorate at large .