Luckily for us, the train was late.
我們真湊巧，火車晚點了。
The accident could have been much worse; luckily no harm was done.
這次事故本來可能糟糕得多；所幸沒有造成傷害。
Luckily I was feeling in a good mood.
幸好我當時情緒好。
Luckily, a bush broke his fall.
幸虧有灌木接著，他摔得不重。
Luckily, I am a good swimmer.
幸好我是個游泳好手。