| 释义 |
Ospika R.
- spikern. 排球队的扣杀员；针齿式圆盘耙
- speakersn. 演说家；扬声器；发言者（speaker的复数）
- 读、写、算dú _ xiě _ suàn
the three R's
- 阴极射线管yīn jí shè xiàn guǎn
cathode-ray tube (CRT); cathode-ray lamp; C-R tube
- 絮凝反应xù níng fǎn yīng
flocculoreaction; F. R.
- 每分钟转数měi fèn zhōng zhuǎn shù
revolutions per minute (r/m)
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