sudden的副词suddenly；
suddenly
adv. 突然地；忽然。
例句
Suddenly the lights went off.
灯突然熄灭了。
The rope suddenly went slack.
绳子突然松了。
His eyes were suddenly intent.
他的目光突然专注起来。
Her voice was suddenly breathy.
她的声音突然间夹杂了呼吸声。
水利万物而不争,
而万物莫能与之争。
