mind [maɪnd] 词频1 词根: 心智

n. 心，精神，心力，知，智力，智慧;心胸，头脑，人;愿望，目的，意向，意志，决心，见解，意见;记忆，记性，记忆力，回想; vi. 介意;注意; vt. 专心于;介意;愿意做;照顾;

💡 mind→心；意志；精神；理性；智力；注意；开会；介意

"His mind reached after an understanding of the problem."

近义：heed, attend, ware, beware, follow, care

calling ['kɔ:liŋ] 词频5

n. 呼喊;（从事某职业或活动的）欲望;职业;邀请; v. 叫( call的现在分词);通电话;认为;估计;

"He realized that his calling was to preach the gospel."

近义：invocation, paging, summoning, summons, beck, prayer

back [bæk] 词频1

n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背; vt. 使后退;支持;加背书于;下赌注于; vi. 后退;倒退; adj. 背部的;后面的;以前的;拖欠的; adv. 以前;向后地;

"Water allotments to farmers were cut back in the drought."

近义：second, support, endorse, illustrate, document, backtrack 反义：impel, inch, save, loop, sheer, slew

sometime ['sʌmtaim] 词频2

adv. 将来某个时候;过去某个时候;改天;来日; adj. （指某人曾经是…）从前的，一度的;某一时间的;

💡 某一(some)时候(time) 某时

"I saw him sometime last summer."

近义：olden, whilom, ex, former, occasional, random