a well-timed intervention

• 及时的介入

a well-timed intervention的用法和样例：

例句

1. Usually no further intervention is required.
   通常，不需更进一步的介入。
2. TACE via the IPA is a safe and efficient for HCC.
   经膈下动脉介入化疗栓塞原发性肝癌是安全有效的介入治疗方法。