13. It's lucky that everyone survived from the airplane crash.
幸運的是所有人在這次空難中幸免于難。
還能這樣說：
Luckily, nobody was killed in the airplane crash.
Luckily, all the passengers were alive in the airplane crash.
14. They tried to find the cause of the aviation accident.
他們試圖找到飛機失事的原因。
還能這樣說：
They tried to investigate what caused the aviation accident.
They made an attempt to determine the reason why the airplane crash happened.
15. I was sorrowful for the victims of the air crash.
我為空難中的遇難者感到悲痛。
還能這樣說：
My heart bled for the deceased of the air crash.
I mourned for the dead in the airplane accident.
應用解析：
out of thin air 無中生有；
put on airs 裝腔作勢；
live on air 喝西北風過日子，餓肚子過活
16. The wreckage was distributed all over the area after the plane crashed on the land.
飛機墜毀后，殘骸散落一地。
還能這樣說：
The wreck of the crashed plane was scattered on the land.
There was a lot of debris scattered over the land after the plane crashed.
17. The plane cracked up by the lightning.
飛機遭雷擊而墜毀。
還能這樣說：
The plane crashed and struck by the lightning.
The airplane was struck by thunderbolt and then crashed.
應用解析：
have a crack at 試一試，（在某件事上）試一試自己的能力；
in a crack 片刻間，轉眼間；
the crack of doom 世界末日，最后審判日的雷聲