Our health insurance plan covers surgery to remove a kidney calculus at partner hospitals.

我們的健康保險方案涵蓋在合作醫院進行的腎結石移除手術。

The employee emailed HR that a painful calculus would keep him out of the office.

這名員工寄電子郵件告知人資，疼痛的結石會讓他暫時無法進辦公室。

Before booking the business trip, she asked whether the calculus required urgent treatment abroad.

預訂出差行程前，她詢問這顆結石是否需要在國外緊急治療。