demanding
/dɪˈmɑːndɪŋ/adjective
1- (of a task) requiring much skill or effort（任务）难度大的, 要求高的：
she has a busy and demanding job.
她的工作既繁忙又费力。
1.1
- (of a person) making others work hard or meet high standards（人）苛求的。
派生词