他一回家就解开了领带，觉得轻松多了。

Tā yí huíjiā jiù jiěkāi le lǐngdài, juéde qīngsōng duō le.

As soon as he got home, he loosened his tie and felt much more relaxed.

你先解开外套的扣子，再量体温。

Nǐ xiān jiěkāi wàitào de kòuzi, zài liáng tǐwēn.

First undo the buttons of your coat, then take your temperature.

医生终于帮他解开了多年的心理问题。

Yīshēng zhōngyú bāng tā jiěkāi le duōnián de xīnlǐ wèntí.

The doctor finally helped him resolve his long‑standing psychological problems.