vi.

1. （狮，虎等）吼叫；（风等）呼啸；（雷，炮等）轰鸣
   Day and night heavy trucks roared past their houses.

   重型卡车日夜不停地从他们家呼啸而过。

2. 大声叫喊；狂笑；大声歌唱[（+at/with）]
   He roared with anger.

   他气得大吼。

   The sergeant roared at his men.

   中士对他的士兵大吼。

3. 喧哗；喧闹
4. （马）喘鸣

vt.

1. 呼喊；大声喊出；高唱[（+out）]
   The crowd roared their approval.

   人群大声呼喊赞成。

2. 叫喊得使……[O8]
   He roared himself hoarse.

   他喊哑了嗓子。

3. 使轰鸣

n.[C]

1. 吼，啸；怒号；轰鸣声；喧闹声
   The little girl was frightened by the tigers roars.

   小女孩被老虎的吼叫声吓坏了。

2. 呼叫；大笑声
   A roar of laughter greeted our ears.

   一阵大笑声传入我们耳中。

n.

v.

1. make or utter a roar.
   ▸express in a roar.
   ▸laugh loudly.
   ▸(of a horse) make a loud noise in breathing as a symptom of disease of the larynx.
2. (of a vehicle) move with a roar at high speed.
   ▸act or happen fast and decisively.