副詞 vastly:

1. to an exceedingly great extent or degree
   同義詞：immensely

1. Balloons are much easier to handle, and are also vastly cheaper.
   氣球操作起來卻簡單的多，造價也大為低廉。
2. His piano playing has vastly improved since last year.
   自去年以來他的鋼琴彈奏技巧有了極大的改進(jìn)。
3. His father was vastly pleased with him.
   他父親對他極為滿意。