We can't recall how often he's written.
我們記不起來他每隔多久寫一封信。
基礎口語 1700 句 第 135 部分

?? 句中詞匯解析

從本句中提取的重要詞匯

recall ['rik?l] 詞頻1 詞根: re
vt. 叫回，召回;使想起，回想;取消;調回工廠; n. 召回，喚回;記憶力，回想;罷免;收回通告;
?? re回，向后+call呼喚→召回，回憶
"He seemed to have a very selective recall of past events."
他好像對過去的事情有選擇地回憶.
近義：recollect, remember, revive, reminisce, retrospect, memento
often ['?f(t?)n] 詞頻1
adv. 常常;經常;時常;再三;
?? 十(ten)有八九的(of)， 經常的
"Sleep has often been thought of as being in some way analogous to death."
人們常常認為睡眠在某種意義上來說類似死亡。
近義：manyfold, oft, oftentimes, repeatedly, usually, offtimes 反義：infrequently, occasionally, seldom, sometimes
written ['ritn] 詞頻1
adj. 書面的;寫成文字的;明顯受到…影響;（感情）全掛在臉上; v. 寫( write的過去分詞);寫信;
"The letter was written in her usual acerbic style."
這封信是用她慣常的尖刻語調寫的。

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