obligation religion league rely ally rally ligament

obligation [,ɔbli'ɡeiʃən] ob=to，toward
The notion is of binding with promises or by law or duty.

the state of being forced to do sth because it is your duty, or because of a law, etc
something which you must do because you have promised, because of a law, etc: to fulfil
n. 义务；职责；债务

religion [ri'lidʒən]
the belief in and worship of a god or gods, or any such system of belief and worship
n. 宗教；宗教信仰

league [li:ɡ] band
a group of people or countries who have joined together because they have similar aims, political beliefs etc
Sports An association of teams or clubs that compete chiefly among themselves
A class or level of competition
To come together in or as if in a league.
To bring together in or as if in a league
n. 联盟；社团；【体育运动】 俱乐部联合会：球队或俱乐部的联合会，主要在他们内部进行比赛;比赛的种类或水平;范畴
vt. 使…结盟；与…联合
vi. 团结；结盟

例句
Several nations formed a defense league.
几个国家结成了防御联盟。
The local schools formed a football league.
当地几所学校组建了足球联合会。
They are not in the same league.
他们的水平有高低。

ligate['laiɡeit]
to tie with a ligature
vt. 绑扎；结扎（血管等）

ligature /ˈlɪg.ə.tʃər/
a thread or wire used for tying something, especially a blood vessel:
smooth combination of two or more notes of different pitch, or mark indicating this; slur; tie
(in printing) two or more joined letters,
To ligate
n. 绷带；绳索；连字；连接物；连音; 连结线
vt. 结扎；捆

ligament ['liɡəmənt] l I lig=loy=ly
any of the strong strips of tissue in the body that connect bones together, limiting movements in joints and supporting muscles and other tissue
n. 韧带；纽带，系带

ally['ælai, ə'lai]
a country that has agreed officially to give help and support to another one, especially during a war:
someone who helps and supports someone else
n. 同盟国；伙伴；同盟者；助手
vt. 使联盟；使联合；(在起源或性质上)与...相关联
vi. 联合；结盟

词组短语
ally with与…结盟

例句
England and Russia were allies in the Second World War.
英国和俄国在二次世界大战中是盟国。
The English language is allied to the German language.
英文和德文属同一语系。
The three sisters allied against their elder brother.
三姊妹联合起来反对哥哥。

rally ['ræli] re+ally bring together
a public meeting of a large group of people, especially supporters of a particular opinion
to (cause to) come together in order to provide support or make a shared effort:
a car or motorcycle race, especially over long distances on public roads:
to attack with raillery : BANTER
v召集; 团结；重整；重新振作(精神等);恢复健康、力量等；嘲弄,挖苦,开玩笑
n. 集会；(精神等方面)振作；(身体)复元；(爱好相同者的)联谊会，交谊会公路赛车会（gathering of automobile enthusiasts）

例句
The commander rallied his tired soldiers and they fought off the enemy at last.
指挥官重整疲惫不堪的士兵,最后他们终于击退敌人
You should rally your courage.
你应该鼓起勇气。
The voters rallied to the Conservatives.
选民们团聚在保守派一边
Parker won last week's rally.
帕克赢得了上周汽车竞赛会的冠军。

raillery ['reiləri]
joking or laughing at someone in a friendly way
n. 逗趣；开玩笑；戏弄人的行为(或话)

alloy loyal

loyal ['lɔiəl]
firm and not changing in your friendship with or support for a person or an organization, or in your belief in your principles
adj. 忠诚的，忠心的；忠贞的
n. 效忠的臣民；忠实信徒

例句
She was loyal to her faith.
她忠于自己的信念。

alloy ['ælɔi, ə'lɔi]
a metal that is made by mixing two or more metals, or a metal and another substance
to spoil or reduce in value:
vt. 使成合金；使(贵金属)降低成色;使变硬
n. 合金;(和金或银等贵金属熔合的)贱金属，低级金属;混合，融合
vi. 易于铸成合金;(混有杂质)使低劣，使低贱，(通过掺杂作用)减少，减损(或减低影响)(幸福、乐趣、兴趣等)；使缓和：

例句
Brass is an alloy of copper and zinc.
黄铜是铜和锌的合金。
Gold and iron alloy with ease.
金和铁易于合铸。
Mercy should alloy our stern resentment.
宽容会缓和积怨。

麻省理工公开课 - 固态化学导论课程节选
And you have this liquid alloy at 600 degrees centigrade, and it turns into a molten salt.

你得到了液态合金,在600度的时候，它就转变成熔融盐。