| 释义 |
Roper R.
- ropern. 制绳者；套绳者；诱人进入赌场者
- troopern. 骑兵；骑警；伞兵；部队运输船
- croppern. 种植者；农作物；收割机；修剪机
- droppern. 使滴下的东西；滴管；点滴器
- 读、写、算dú _ xiě _ suàn
the three R's
- 制绳者zhì shéng zhě
roper
- 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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