• 读、写、算dú _ xiě _ suàn the three R's
• 每分钟转数měi fèn zhōng zhuǎn shù revolutions per minute (r/m)
• 絮凝反应xù níng fǎn yīng flocculoreaction; F. R.
• 阴极射线管yīn jí shè xiàn guǎn cathode-ray tube (CRT); cathode-ray lamp; C-R tube

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in sum, in surprise, in tandem, in tears, in terms of, in terrorem, in that, in that case, in the afternoon, in the air,

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3G, 401(K), a,

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in the evening, in the event of, in the event that, in the face of, in the final analysis, in the first place, in the flesh, in the form of, in the future, in the hands of,

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3G, 401(K), a,

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in the mass, in the meantime, in the middle, in the middle of, in the midst of, in the near future, in the nick of time, in the open, in the open air, in the past,

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3G, 401(K), a,