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- The causes of forming "black materials" in the production of chlorobenzene were analyzed,and preventive measures were made. 对氯苯生产中出现"黑料"的原因进行了分析,制定了防范措施。
- Two black material alone carved jade pick up more lifelike birds, jumping around between the branches, a symbol of auspiciousness more! 两只黑色料独玉摘雕出来的小鸟更显栩栩如生，在枝头间跳来跳去，更显喜庆吉祥！
- On a bright winter's day spread a sheet of any black material across a snowdrift. 在明朗的冬天,往雪堆上播散一片黑色的物质。
- To prevent this, drape a piece of black material in front of the aquarium and cut a small hole large enough for the lens. 为了预防，您可以在鱼缸前面盖一块黑布然后剪一个刚好够大的小孔把镜头伸进去。
- The black material is considered as carbon deposition,which is formed by oily-liquid medium fission product(mainly carbon black) covering inside crack during the discharge process of pulse current. 认为这些黑色覆盖物为脉冲电流在放电过程中,油性液体介质裂变产物(主要为碳黑)涂覆在裂纹内部形成的积碳。
- The black material was, however, consistent with an embalming mix of wood resins, bitumen and chemicals such as malachite.It was also consistent with gypsum, which gives the mix its plaster smell. 黑色的物质包括树脂，沥青，孔雀石等等成分，他们混合发出石膏味。
- He was in black from crew to earing. 他全身上下都穿着黑衣服。
- He whipped up a pistol and shot at the black bear. 他急忙抓起手枪，向那头黑熊射击。
- Many people were taken off by the Black Plague. 许多人被黑死病夺去了生命。
- The man is carrying a small black plastic handbag. 这个人提着一个黑色的小塑料提袋。
- The old trade in black ivory is on more. 昔日非洲黑奴的买卖已不复存。
- The black sedan suddenly drew out into the traffic. 黑色轿车突然开动，驶进了车流。
- I have a snag in my best black tights. 我最好的一条黑裤袜给划破了。
- He fell down the stairs and was all black and blue. 他从楼梯跌下而青一块紫一块了。
- Black and white show a striking contrast. 黑和白形成明显的对比。
- She buy a black nightie to wear on her honeymoon. 她买了一件黑色睡衣准备在蜜月时穿。
- Jim staked all his money on the black horse. 吉姆把所有的钱都押在那匹黑马上了。
- During the war we had to black out all our windows. 战时我们必须用黑布遮着窗口以免透光。
- My brother is the black sheep of the family. 我弟弟是我们家的害群之马。
- The lorry skidded on a stretch of black ice. 货车在薄冰路面上打滑。
