用法:
1 in a regrettable way 惋惜地; 遗憾地; 可悲地:
a regrettably small income 少得可怜的收入.

用法:
2 it is to be regretted that 十分遗憾; 遗憾的是:
Regrettably, the experiment ended in failure. 很遗憾, 该试验最後失败了.

• rapacious
• rapaciously
• rapacity
• rape 1
• rapid
• rapid-fire
• rapidity
• rapidly
• rapids
• rapid transit
• rapier
• rapier-thrust
• rapine
• rapist 1
• rapport
• rapprochement
• rapscallion
• rapt
• raptly
• rapture
• rapturous
• rapturously
• rare 1
• rarebit
• rare earth