形容詞 nightly:

1. happening every night

副詞 nightly:

1. at the end of each day
   同義詞：every night

1. Has appeared in two plays; appears on the nightly news.
   在兩部戲中出場; 在晚間新聞節(jié)目中露面
2. My husband and I watch the nightly news broadcast everyday.
   我丈夫和我每天都看晚間新聞。

night.ly

adj.（形容詞）
Of or occurring during the night; nocturnal:
夜間的：屬于或發(fā)生在夜間的；夜間活動的：
例句：
the cat`s nightly prowl.
貓夜間的捕食

Happening or done every night:
每夜發(fā)生或完成的：
例句：
the physician`s nightly rounds.
醫(yī)生每夜的巡視

【引伸】
night.ly
adv.（副詞）