首頁›Browse›B›by thenby then編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看by thenby then — 副詞副詞1. at or before that time in the past or future1.副詞釋義到那時at or before that time in the past or future例句I will have finished my homework by then.