suddenadj.突然的；出乎意料的n.突发之事sudden variation突然变化sudden siltation泥沙骤淤Sudden Tan Lotion帕地马酯O和二羟丙酮洗剂sudden stranguria暴淋sudden stagnation暴郁sudden heavy rain突发性暴雨sudden tip wither剑麻叶尖猝枯病sudden arthralgia暴痹Sudden/am ther突发性／针灸疗法sudden appearance异军突起

1. The sudden fall in the value of the dollar has puzzled financial experts.
   美元突然贬值，财经专家无不大伤脑筋。
2. He had been the king's favourite, and his sudden fall from grace surprised everyone.
   他本是国王的幸臣，一朝失宠众人无不感到意外。