adj.形容詞每兩週一次的The meeting is held on a bi-weekly basis.
adj.形容詞每週兩次的The newspaper is published bi-weekly.
adv.副詞每兩週一次地The reports are submitted bi-weekly.
adv.副詞每週兩次地The newsletter is sent out bi-weekly.
n.名詞雙週刊He subscribes to a bi-weekly that covers local events.