porta-
                combining form
     -          denoting something that is movable or portable, often used as part of a proprietary name表示“可移动的”, “可搬动的”:
-       Portaloo Portakabin. 
词源
from PORTABLE .
ORIGIN: from portable 
| 词汇 | porta- | 
| 词根词缀 | NewOxfordEC SOED porta- combining form 
 词源 from  ORIGIN: from  | 
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