这次失事的具体原因，还需要专家进一步调查。

Zhè cì shīshì de jùtǐ yuányīn, hái xūyào zhuānjiā jìnyíbù diàochá.

The exact cause of this accident still needs further investigation by experts.

为了防止飞机失事，航空公司不断加强安全检查。

Wèile fángzhǐ fēijī shīshì, hángkōng gōngsī bùduàn jiāqiáng ānquán jiǎnchá.

To prevent plane accidents, airlines continuously strengthen safety inspections.