大勢の客をもてなすのは気骨が折れる。
Entertaining a crowd of guests is mentally exhausting.
上司の機嫌をうかがうのは気骨の折れる仕事だ。
Keeping the boss in a good mood is a nerve-racking job.
慣れない土地での交渉は、思った以上に気骨が折れた。
Negotiating somewhere unfamiliar was more of a strain than I had expected.