1. The spring breeze is pleasantly warm.
   春风和煦。
2. The noise of the stream have a pleasantly somnolent effect.
   小河潺潺的流水声有宜人的催眠效果。
3. The various sounds mingled pleasantly.
   各种各样的声音令人愉快地混合在一起。
4. I was pleasantly surprised.
   我感到惊喜。
5. He enjoys the pleasantly cool autumn days.
   他非常喜欢凉爽的秋天。

　2个副词解释