他最近工作太忙，几乎与外界失去了联系。

Tā zuìjìn gōngzuò tài máng, jīhū yǔ wàijiè shīqù le liánxì.

He has been so busy with work lately that he has almost lost contact with the outside world.

这家公司一直对外界保持神秘，很少公开内部情况。

Zhè jiā gōngsī yìzhí duì wàijiè bǎochí shénmì, hěn shǎo gōngkāi nèibù qíngkuàng.

This company has always remained mysterious to the outside world and rarely reveals internal information.

他在社交媒体上分享自己的研究成果，希望能得到外界的反馈和建议。

Tā zài shèjiāo méitǐ shàng fēnxiǎng zìjǐ de yánjiū chéngguǒ, xīwàng néng dédào wàijiè de fǎnkuì hé jiànyì.

He shares his research results on social media, hoping to get feedback and suggestions from the outside world.