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1. Important derivatives are: ambition, circuit, exit² issue, perish, sudden, transit, ion, commence, initial, janitor, January
重要派生词为： ambition， circuit， exit² issue， perish， sudden， transit， ion， commence， initial， janitor， January

2. To go.
前往，进行，达到，处于.

3. Full-grade form *ei- .
全级形式*ei- .

4. adit , ambient , ( ambition ), circuit , coitus , comitia , exit , introit , issue , obituary , perish , praetor , preterit , sedition , ( subito ), sudden , ( trance ), transient , ( transit ), ( transitive ), from Latin ^ore , to go;
adit , ambient , ( ambition ), circuit , coitus , comitia , exit , introit , issue , obituary , perish , praetor , preterit , sedition , ( subito ), sudden , ( trance ), transient , ( transit ), ( transitive ), 源自 拉丁语 ^ore , 前往，进行;

5. ion ; anion , cation , dysprosium , from Greek ienai , to go.
ion ; anion , cation , dysprosium , 源自 希腊语 ienai , 移转.

6. Suffixed zero-grade form *i-t- .
添加后缀的零级形式*i-t- .

7. further suffixed form *i-t-yo- . commence , initial , initiate , from Latin initium , entrance, beginning ( in- , in; see en );
附加的后缀形式 *i-t-yo- . commence , initial , initiate , 源自 拉丁语 initium , entrance, beginning ( in- , 在…之内; 参见 en);

8. count ² , county ; concomitant , constable , ( viscount ), from Latin comes (stem comit- ), companion (N “one who goes with another”; com- , with; see kom ).
count ² , county ; concomitant , constable , ( viscount ), 源自 拉丁语 comes （字干 comit- ), 同伴(N “和另一个人去的人”; com- , 与; 参见 kom).

9. Suffixed form *i-ter . errant , eyre , itinerant , itinerary , from Latin iter , journey.
添加后缀的形式*i-ter . errant , eyre , itinerant , itinerary , 源自 拉丁语 iter , 旅行.

10. Extended form *y3- (N *ya…- ) in suffixed forms *y3-no- , *y3-nu- .
延伸形式 *y3- (N *ya…- ) 在添加后缀的形式 *y3-no- 中, *y3-nu- .

11. janitor , January , Janus , from Latin i3nus , archway, and I3nus , god of doors and of the beginning of a year;
janitor , January , Janus , 源自 拉丁语 i3nus , 拱门, 和 I3nus , 门神和一年的开始;

12. Hinayana , Mahayana , from Sanskrit y3nam , way (in Buddhism, “mode of knowledge,” “vehicle”).
Hinayana , Mahayana , 源自 梵语 y3nam , 路 （在佛教中, “认识的方式,” “交通工具”).

ei的词源：

13. Pokorny 1. ei- 293.
波科尔尼 1.ei- 293.