顿时[dùn shí]
词典suddenly：意外地，忽然地；奄；勃；霍然。
词典immediately：立即，马上；直接地；紧接地。
词典at once：立刻；立即；同时；一起。
词典forthwith：即时；即刻，毫不拖延地。
顿时[dùn shí]
immediately; suddenly; at once; forthwith; in a short space:
例：会场上顿时沸腾起来了。
The meeting hall was seething at once.
他一讲话， 大家顿时安静下来。
Immediately on his beginning to speak, everyone was silent.
1. immediatelyatonceforthwith：immediateinstantaneousness 即时 | immediatelyatonceforthwith 顿时 | immediatelyforthrightincontinent 立即
2. At once：命令我! Command me! | 顿时! At once! | 为了国王! For the king!
3. right now：can vaux.可以容或 | right now顿时 | there is有,存在