grueling

adj.

紧张的，激烈的，使极度疲劳的；

adv.

紧张地，激烈地；

1. The Hawaii Ironman is even more grueling.
   夏威夷铁人三项赛就更艰巨了。
2. The presentation of future plans had been a grueling work.
   制定这些计划是一项令人精疲力竭的工作。

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