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omitting (reluctantly); leaving out; dropping
giving up (reluctantly); parting with; sharing; sparing
時間の都合で詳細は割愛します。
Due to time constraints, I'll omit the details.
重要な部分は割愛できない。
The important parts cannot be left out.
割愛した箇所は資料に記載してある。
The omitted sections are documented in the materials.