were proficient in

language: zh

definitions

  1. had the skill or knowledge to do something well (past tense, plural or formal 'you')
    zh: 精通；熟练于（过去时，复数或正式“你”）

examples

  1. The team were proficient in handling complex emergencies.

    该团队在处理复杂紧急情况方面很熟练。