relentless

adj. /rɪˈlentləs/ C1

持续不断的；不懈的

Continuing without becoming weaker or stopping.

仙境例句

The Hatter’s questions were relentless, and Alice had no time to drink her tea.

帽匠的问题一个接一个，没完没了，爱丽丝连喝茶的工夫都没有。