Such ice cores trap gases, bits of dust, and other chemicals that were present in the snow that fell over Greenland for thousands of years and then became compressed into ice.
这些冰芯将气体、尘埃和其他化学物质封存在格陵兰岛数千年来的积雪中，然后被压缩成冰。
Not only did the two small speakers that sit above and below the screen become an instant dust-trap, they were fairly quiet and didn't exactly impress on the audio quality front.
不单单是那两个在屏幕上下的扬声器很快会变成尘土陷阱，它们完全“安静”，同时不能准确地表现音频质量。
The cyclone separator is one of the dust collectors, which makes use of the centrifugal force generated by rotating airflow to separate and trap the particles.
旋风除尘器是利用旋转气流产生的离心力使尘粒从气流中分离并捕集下来的装置。
The cyclone separator is one of the dust collectors, which makes use of the centrifugal force generated by rotating airflow to separate and trap the particles.
旋风除尘器是利用旋转气流产生的离心力使尘粒从气流中分离并捕集下来的装置。
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