我接信后马上和他联系。

I got in touch with him immediately after I received the letter.

他欣然同意在完成他眼前的任务后马上就走。

He was happily agreeable to go as soon as he was finished with his immediate commitments

饭后马上吃水果会影响消化功能

употребление фруктов сразу после еды может сказаться на пищеварении

答应领到钱之后马上送来

Обещал сейчас же занести деньги с получки