What do you mean "suddenly"?
Pinyin dùn shí?
From the sixth chapter of Wu's "Twenty Years of Strange Love" in the late Qing Dynasty: "I was shocked to hear this." ?
Suddenly, cheers shook the whole valley.
Synonym immediately, suddenly, suddenly
The antonym is long, long, long.
Extended data
Sudden synonym
1, right away
Pinyin lì jí
Explain immediately, immediately
Act II of Cao Yu's Sunrise: "Wang Fusheng leaned down and looked around the room. When he saw no one, he immediately introduced Heisan. "
Our department was ordered to start work at once.
2. Suddenly
Pinyin HRán
It shows that the situation happened quickly and unexpectedly.
The source suddenly touched the ruler. -"Kouji" ("Kouji" is selected from "Preface to Poems of Qiu Sheng Knowing New Things at the Beginning of Jade")
The weather suddenly turned cold.
Sudden antonym.
long-term
Pinyin xǔ jiǔ
The explanation is that the time duration is long or the interval is long.
Source song? Chen Hao? "Continued Old News" Volume 7: "I have been with you for a long time, but I can't stay. ''
I've been with you for a long time, but I can't stay.
The calm water surface was disturbed, and a loud noise in the lake lingered in the silent night sky for a long time.
Reference source
Baidu Encyclopedia-Suddenly
Baidu encyclopedia-right away
Baidu Encyclopedia-Suddenly
Baidu encyclopedia-for a long time