About once a month. Not too often, because neither of us has much time. We both have too much work to do.
大约每月一次。不太经常写信，因为我俩的时间都很紧。我们都有做不完的事。
初三英语课文
Unit 24 Mainly Revision
📚 句中词汇解析
从本句中提取的重要词汇
adv. 一次，一趟;一倍;曾经;一旦;
conj. 一旦…就…;一经;
n. 一次，一回;
💡 on=one一+ce次 → 一次
"Once in the bloodstream, the bacteria adhere to the surface of the red cells."
细菌一进入血液里，就附着在红细胞表面上。
近义：heretofore, occasionally, onetime, previously, sometimes, thereinbefore
conj. 因为;
💡 cause, cuse 表原因,目的;司法程序,诉讼
"He was arrested because of his political affiliation."
他因所属政党的关系而被捕。
近义：since, whereas, for, forasmuchas
neither
['niðɚ]
adj. （两者）都不的;
pron. 两者都不;
adv. 两个都不;既不…也不;
conj. 也不;既不;
💡 n(not)+either→既非；皆不；两者都不
"Neither party is willing to compromise and herein lies the problem."
双方都不愿意妥协，问题就在这里。
近义：no, either
反义：likewise, moreover, too, withal, besides, then
adv. 常常;经常;时常;再三;
💡 十(ten)有八九的(of)， 经常的
"Sleep has often been thought of as being in some way analogous to death."
人们常常认为睡眠在某种意义上来说类似死亡。
近义：manyfold, oft, oftentimes, repeatedly, usually, offtimes
反义：infrequently, occasionally, seldom, sometimes
n. 时间;时刻;时代;次;
vt. 为…安排时间;测定…的时间;调准（机械的）速度;拨准（钟、表）的快慢;
vi. 合拍;和谐;打拍子;
adj. 定时的;定期的;[美国英语]分期（付款）的;
int. [体育]时间到，（一场或一局等的）比赛时限，暂停;
"I can only carry two at a time."
我一次只能带两个。
近义：clock, lifetime, period, season, chapter, aeon