understanding

1、under + stand + -ing.
2、字面含义：stand in the midst of.
3、站在其中，沐浴在知识的海洋里，所谓内行、内行，身在其中，才解其味也；因此，只有身在其中，才能理解、明白。
4、At here, the under is not the usual word meaning "beneath," but from Old English under, from PIE *enter- "between, among". 另见：undertake.

understanding (n.)

Old English understanding "comprehension," verbal noun from understand (v.). Meaning "mutual agreement" is attested from 1803.

1. Friendship means understanding, not agreement. It means forgiveness, not forgetting.It means the memories last, even if contact is lost.

友情是理解，不是妥协；是原谅，不是遗忘。即使不联系，感情依然在。

2. We had this understanding that courses were roughly the same weight.

我们已经了解到各门功课差不多一样重要。

3. My understanding was that we'd meet at her place.

我的理解是我们在她那儿见面。

4. David said nothing, but simply nodded, as if understanding perfectly.

戴维什么都没说,只是点点头,好像完全理解了.

5. They have begun dialogues to promote better understanding between both communities.

双方已经开始了对话，以增进两个社群间的彼此了解。

【understandable, understanding】
understandable: 可理解的,能够懂的 an understandable mistake
understanding: 明白事理的,能体谅的, an understanding girl,

【agreement, contract, treaty, convention, bargain, understanding, accord】
这些名词均含“协定，协议，契约，合同”之意。
agreement: 普通用词，含义最确定，泛指个人、团体或国家之间取得一致而达成的任何协议、协定或合同、契约等，可以是口头的，也可以是书面的。
contract: 侧重指双方或多方订立的具有法律效力的正式的书面合同或契约。
treaty: 指国家之间经外交谈判后依照国际法签订的正式条约。
convention: 比treaty更专门化，但不及treaty正式。也可指国家之间就有关事情签订的条约。
bargain: 通常指商业交往中的购销合同。
understanding: 指不具约束力的非正式的协议。
accord: 多指国际间的非正式协议。