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首页英语词典unstableunstable的意思

unstable

英 [ʌn'steɪb(ə)l] 美[ʌn'stebl]

英英释义考试真题实用场景例句

近义词unsound unsure changeable infirm weak flighty breakable unsteady fickle capricious unreliable erratic unsafe

反义词

adj. 不稳定的；动荡的；易变的

CET4TOEFLCET6低频词扩展词汇

英英释意

1. lacking stability or fixity or firmness;: "unstable political conditions"; "the tower proved to be unstable in the high wind"; "an unstable world economy"

2. highly or violently reactive;: "sensitive and highly unstable compounds"

3. affording no ease or reassurance;: "a precarious truce"

4. suffering from severe mental illness;: "of unsound mind"

5. disposed to psychological variability;: "his rather unstable religious convictions"

6. subject to change; variable;: "a fluid situation fraught with uncertainty"; "everything was unstable following the coup"

英文词源

unstable (adj.): early 13c., "apt to move," from un- (1) "not" + stable (adj.). Similar formation in Middle High German unstabel. Meaning "liable to fall" is recorded from c. 1300; sense of "fickle" is attested from late 13c. An Old English word for this was feallendlic, which might have become *fally.

考试真题

He says the market for the tea is unstable and he is often forced to sell his purple tea for the same price as green tea leaves.

How unstable the West Antarctic ice sheet is.

Surrounded by open ocean, it is also vulnerable, but Antarctic experts disagree strongly on just how unstable it is

We are usually tired already by the time we get on a plane, and the crowded apace and unstable Internet connection make work more challenging.

Mathematical models have also revealed that food webs may be unstable, where small changes of top predators can lead to big effects throughout entire ecosystems.

Unstable boundaries of the two classes.

实用场景例句

The political situation remains highly unstable.: 政局仍然十分动荡。

chemically unstable: 化学上不稳定的

After the fall of Pitt in 1801 there was a decade of unstable government...: 1801年皮特倒台后，政府经历了10年的动荡。

The situation is unstable and potentially dangerous.: 情况不稳定，可能有危险。

Both clay and sandstone are unstable rock formations.: 黏土和砂岩都是不牢固的岩石构造。

He was emotionally unstable...: 他情绪不稳定。

Coleridge was also a highly unstable person.: 科尔里奇还是个情绪非常不稳定的人。

Rock walls resting against glaciers will become unstable as ice disappears and so set off avalanches.: 由于冰川消融,紧靠冰川的石崖变得不稳定,因此引发雪崩.

It is well known that operating a process under unstable conditions is a challenging control problem.: 众所周知,将程序操作在不稳定点的条件上是很具挑战性的控制问题.

It shall initiate the specified reaction plan when the process becomes unstable or not statistically capable.: 当过程变得不稳定或统计能力不足时,应采取规定的反应计划.

A ship without a ballast is unstable.: 一艘船如果没有压舱物,便不会稳定.

Her mother, mentally unstable, eventually entered an asylum in 1885.: 她的精神不稳定的母亲在1885年最终进了一家精神病院.

During the period, many kinds of problems occur frequently, and the social structure is extremely unstable.: 这一时期属社会问题多发期、社会结构最不稳定期.

The patient's condition was unstable.: 那患者的病情不稳定.

Is your television picture wobbly ( unstable ) recently?: 最近您的电视机图像不稳定?

This article emphasizes a prediction of overbreak, the unstable wedge , for openings jointed rock mass.: 本文着重于岩体中洞室超挖-不稳定楔形体的预测.

The vocational commitment of novice teacher is in the indesicive and unstable stage.: 新手型教师的职业承诺仍是一种选择性的阶段和状态,还不成熟、不稳定.

Presuming the Three to be vanquished, the Horadrim's unstable fellowship began to dissipate.: 可以料想在三大恶魔被击败之后, 赫拉迪姆那不稳固的友谊便开始消散了.

When the plate becomes unstable, it buckles laterally.: 当板失去稳定时, 就发生横向屈曲.

The situation was unstable.: 局势不稳.

This bookcase is too unstable to hold so many books.: 这书橱很不结实,装不了这么多书.

He was the most unstable kind of fool I had ever seen.: 他是我所遇见过的最反复无常的傻瓜.

The bed is rickety [ unstable ] .: 这床不牢.

The political situation was unstable.: 政局不稳.

The political situation remains highly unstable.: 政局仍然十分动荡。

The situation is unstable and potentially dangerous.: 情况不稳定，可能有危险。

After the fall of Pitt in 1801 there was a decade of unstable government.: 1801年皮特倒台后，政府经历了10年的动荡。