“款陳”一詞在中文語境中較為正式，通常指向上級或尊長詳細陳述意見或情況。根據具體語境，其英文翻譯可參考以下方案：

1. **State in detail**
- 適用于正式匯報場景
- 例：He stated his proposal in detail to the committee.

2. **Present comprehensively**
- 強調系統性的完整陳述
- 例：The consultant presented the market analysis comprehensively.

3. **Make a full exposition**
- 適用于需要深度闡釋的學術或專業場景
- 例：The professor made a full exposition of the theoretical framework.

4. **Set forth methodically**
- 側重條理清晰的逐步說明
- 例：The engineer set forth the construction plan methodically.

根據具體語境，還可考慮：
- 書面報告場景：Provide a detailed account
- 政務場合：Submit a thorough briefing
- 商務演示：Deliver an elaborate presentation

建議根據文本的正式程度、受眾身份和陳述內容的具體性質選擇最貼切的譯法。