and it is only in the seas and rivers, and sometimes lakes, where mud and sit have been continuously deposited,
所以只有在泥沙不停淤積的海洋和江河里，有時在湖泊里，
新概念英語第四冊 Lesson 26 The past life of the earth

?? 句中詞匯解析

從本句中提取的重要詞匯

sometimes ['s?mta?mz] 詞頻1 詞根: sometime
adv. 有時，間或;時而;
?? sometime某一時間的+s表副詞 →有時
"Even friends disagree sometimes."
即便是朋友有時也有分歧。
近義：occasionally, oft, once, rarely, betweentimes, betweenwhiles 反義：invariably, periodically, repeatedly, steadily, usually, consistently
continuously [k?n't?nj??sli] 詞頻4
adv. 連續不斷地，接連地;時時刻刻;連著;直;
"The valley is continuously watered by the melting snow from the mountains."
群山融化的雪不斷流經山谷.
近義：incessantly, permanently, perpetually, steadily, successively, unceasingly 反義：erratically
deposited
v. 儲存；存放；放置（deposit的過去分詞）
近義：entrant
seas
n. 海洋（sea的復數）
rivers
n. 里弗斯（人名）；河流州（尼日利亞州名）；河水鉆

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