動詞 hover:

1. be undecided about something; waver between conflicting positions or courses of action
   同義詞：vibrate, vacillate, oscillate
2. move to and fro
   同義詞：linger
3. hang in the air; fly or be suspended above
4. be suspended in the air, as if in defiance of gravity
   同義詞：levitate
5. hang over, as of something threatening, dark, or menacing
   同義詞：brood, loom, bulk large

1. After the alien spacecraft had hovered over the park for a short time, it vanished.
   那只外星來的宇宙飛船在公園上空盤旋了一會兒之后就不見了。
2. The hawk is hovering overhead.
   鷹在頭頂上盤旋。
3. The mercury hovered around 35 Celsius degree.
   水銀溫度計停留在攝氏35度左右。

hov.er

v.intr.（不及物動詞）
hov.ered,hov.er.ing,hov.ers
To remain floating, suspended, or fluttering in the air:
（在空中）滑翔，懸浮，盤旋：
例句：
gulls hovering over the waves.
在浪尖盤旋的海鷗

To remain or linger in or near a place:
在某處或其附近逗留；徘徊：
例句：
hovering around the speaker`s podium.See Synonyms at flutter
在演講臺邊徘徊參見 flutter

To remain in an uncertain state; waver:
躊躇，猶豫不決；動搖：
例句：
hovered between anger and remorse.
在憤怒與懊恨之間傍徨

n.（名詞）
The act or state of hovering:
懸浮，盤旋地動作或狀態(tài)：
例句：
a helicopter in hover.
盤旋著的直升機

來源：
Middle English hoveren [frequentative of] hoven
中古英語 hoveren [] hoven的重復動詞

【引伸】
hov.erer
n.（名詞）
hov.eringly
adv.（副詞）