她注意到了安脸上露出了苦恼的表情。She was conscious of a troubled expression on Ann's face.他老是被一种叫人苦恼的不安情绪折磨着.He was afflicted always with a gnawing restlessness.他的自私是苦恼的根源.His selfishness was the root of trouble....
The storms could increase the risks posed by river blockages.暴风雨会增加因河道堵塞所造成的危险.An angiogram shows the location and severity of blockages in blood vessels.冠状动脉造影能够显示血管内的阻塞位置以及阻塞的严重程度.Blockages can calls head tax cause hea...
铬在自然界中广泛分布, 生物体中主要以三价铬的形式存在.Chromium is widely distributed in nature, organisms mainly trivalent form of chromium.400系列不锈钢–一种铁 、 碳和铬的合金.Series Stainless Steel – An alloy of iron, carbon, and chromium.研究了不溶性腐殖酸对六价铬的吸附作用.T...