luckily

Luckily, I remembered to bring my umbrella just as it started to rain heavily.

(Chinese) 幸运的是，就在雨开始下大时，我想起带了伞。

The driver lost control of the car, but luckily, no one was injured in the crash.

(Chinese) 司机失去了对汽车的控制，但幸运的是，撞车事故中无人受伤。