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a level substratum是什么意思？

a level substratum

水平的底层

相关词汇
level substratum

level

n. 水平，水准，水平线，水平面，水平仪，[物]电平；adj. 水平的，同高度的，平均的，平稳的；vt. 使同等，对准，弄平；vi. 拉平，（用枪等）瞄准（与 at 连用），变得平坦，将（话、批评等）对准目标；vi. 瞄准，拉平，变得平坦；
例句
Oil prices fell this week to their lowest level in fourteen months, apparently because of over-production.
据说因为产量过剩，这个星期石油价格跌至14个月以来的最低点。

substratum

n. 底层，下层；
例句
...its deep substratum of chalk...
深厚的白垩地层
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
They complained that the election had been rigged.
他们投诉这次选举被人操纵。
She has a desire of climbing mountains.
她想去爬山。
She cast him a significant smile.
她向他投去意味深长的一笑。
She's off work with a bad cold.
她因患重感冒而不上班。
She tried to cultivate an air of sophistication.
她竭力养成一种老于世故的气派。
She praises her pupils without stint.
她极力夸奖自己的学生。
This one defeat was the only hiccup in the team’s steady progress up the League.
这次失利只是球队在朝联赛稳步前进的道路上唯一的小挫折。
Our soldiers force the enemy to retreat.
我们的战士迫使敌人后退。
Metropolitan residents are used to fast rhythm.
大都市的居民习惯于快节奏。
A fire has damaged the school houses.
一场大火毁坏了学校的房子 。