The Hubble telescope captured a display of starlight, glowing gas, and silhouetted dark clouds of interstellar dust in this 4-foot-by-8-foot image of the barred spiral galaxy NGC 1300.
照片长8英尺，宽4英尺，展现了棒旋星系NGC 1300。星光、炽热气体以及星际尘埃构成的暗云轮廓让这个星系呈现出极为美丽的一面。
Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. For personal protection see section 8.
避免粉尘生成。避免吸入蒸汽、烟雾或气体。保证充分的通风。个人防护措施详见第8部分。
The experiments show that it is possible to avoid the pregrind sulfate-slag and get the fine quality pellets, if added 8% L—D furnace dust and 5% lime into the sulfate-slag.
试验表明：硫酸渣添加8％转炉尘及5％生石灰，可以不再细磨，得到质量良好的球团矿。
On Mars, dust devils can be up to 8 kilometers high.
在火星上，尘埃风暴能够达到8公里高。
Apply to a clean floor. Sweep, dust mop, or damp mop as necessary. Use a freshly laundered mop. Apply a full, even coat. Use figure 8 motion.
先将地板清洁干净，用一个干净的人造纤维地拖，以专业8字形涂层法均匀上蜡，给予充分的时间干透。
The 8 glare of street lights and the dust of pollution 9 veil the night sky.
耀眼的街灯、污浊的烟尘掩盖了夜空。
Coal dust content has obvious influence on sulfur dioxide escaped quantity. When coal dust content increase from 6% to 8%, sulfur dioxide escaped quantity will increase about 10%.
煤粉含量对二氧化硫逸出量有显著的影响，煤粉含量从6%增为8%时，二氧化硫的逸出量增加了约10%。
Another 40 workers with no exposure to dust or toxicants were selected as controls. 12 male smokers were 31.8 yr old on average; 8 male non - smokers 32. 3 yr old on average;
另选劳动强度相似、不接触尘、毒的机加工工人40名作为对照，其中男吸烟工人12名，平均年龄31.8岁，男不吸烟工人8名，平均年龄32.3岁；
Another 40 workers with no exposure to dust or toxicants were selected as controls. 12 male smokers were 31.8 yr old on average; 8 male non - smokers 32. 3 yr old on average;
另选劳动强度相似、不接触尘、毒的机加工工人40名作为对照，其中男吸烟工人12名，平均年龄31.8岁，男不吸烟工人8名，平均年龄32.3岁；
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