9.incalculable [in( =not)+calcul( =reckon)数不清的]

　　adj. too great to be calculated; unpredictable 无法计算的，无法预测的，(数目)巨大的

　　ex) Prime numbers of more than 100 digits are incalculable by today’s supercomputers. .

　　就是今天的超级计算机，也无法计算出超过100位的小数。

　　10. incomprehensible [in( =not)+com( =thoroughly) +prehens( =take)根本无法抓住的]

　　adj. that cannot be understood 不能理解的 incomprehension 不了解

　　ex) l’ve studied French for months, but I still find most conversations incomprehensible.

　　我已经学了好几个月法语，但发现对多数对话仍无法理解。

　　11. indisputable [in (=not)+dis( =apart) +put (=think)不必分开考虑的]

　　adj. that cannot be disputed; unquestionable 无争论之余地的，明白的

　　ex) lt’s an indisputable tact that I earn more in sales commissions than she does.

　　我的销售佣金比她多，这是无可争辩的事实。

　　12.induce [in( =in, into)+duc( =lead)拉向里面]

　　vt. sb+to do bring about; persuade; draw a general conclusion or principle from particular facts 引起，致使;劝诱;归纳

　　inducement 劝诱，刺激物 induction 归纳法;感应;就任;募兵 inductive 诱导的;归纳的 induct 正式就任;人会;募兵

　　ex) Doctors often Induce labor in pregnant women with powerful drugs.

　　区生常用强效药物为孕妇催产。

　　13.inept [in (=not)+ept

　　adj. not suitable to the purpose; wrong in a foolish and awkward way; incompetent 不适当的;无能的;愚笨的，笨拙的;不熟练的

　　ineptitude不熟练;不适宜;不当的言行 ineptly 不适当地

　　ex)I apologize for my inept remark;I never meant to offend you.

　　我为自己不恰当的话道歉，我绝不是有意冒犯您。

　　14. ingenuity [in (=in)+gen (=birth)诞生的状态]

　　n. cleverness and skill; originality in design 机灵，精明;才能;独创性，创造力

　　ingenious 机灵的，有发明才能的，巧妙的 ingenuous 纯真的

　　ex) His ingenuity kept the company running even during the cash shortfall.

　　他的才智使公司在资金不足的状况下仍能正常运转。

　　15.ingrained [in (=in)+grain

　　adj. deeply fixed; thorough; going deep(习惯等)根深蒂固的;(谎言)彻头彻尾的;(理论、思想等)深入骨髓的

　　ingrain 生染，使(习惯等)根深蒂固：生染的，根深蒂固的; 生染的纤维

　　ex) Adult’s racial prejudice has typically been ingrained since childhood.

　　成人的种族偏见一般从儿时起就已根深蒂固。

　　16.ingratitude [in( =not)+grat(=thank, pleasing, favor)不感谢的]

　　n. lack of gratitude 不知感恩，忘思负义 ingrate 忘恩负义者

　　ex) Because of her past ingratitude,I won’t be giving her any more gifts.

　　因为她以前不知感恩图报，所以我决不再送她礼物。

　　17. inhabitant [in( =in)+hab( =live, have)在…里面居住的人]

　　n. a person or animal that inhabits some specified region, dwelling, etc. 居民,居住者：栖息动物

　　inhabit 居住于，居住，栖息 inhabitable 适于居住的 inhabited 有人居住的

　　ex) There are only 7 inhabitants in this small apartment building.

　　这幢小公寓楼里只有七个人住。