bidirectional [i b+idir3k.qnl, `dai` ]    (¼øÀ§: 17094 - ´ëÁ¹ ¼öÁØ)  
¶æ Çü) ¾çÁöÇ⼺ÀÇ; µÎ ¹æÇâÀ¸·Î µµÅë °¡´ÉÇÑ
Mean Moving or operating in two usually opposite directions.
ÆÄ»ý¾î bidirectionally  [ºÎ]
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