gruelling

adj.

严厉的；使人筋疲力竭的，使极度疲劳的；

n.

痛打；惩罚；

1. To get a state licence, MSBs have to go through a gruelling vetting process.
   为了得到州内执照，现金回款企业必须通过一段另人精疲力竭的审查过程。

Gruelling
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A riveting look at the incredibly gruelling week that turns a Navy man into a highly trained SEAl.
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