strains
基本解释
- n. [微] 菌株(strain复数);种族
- v. [力] 拉紧;使过度劳累(strain的第三人称单数形式)
词源解说
- 1400年左右进入英语,直接源自古法语的estreindre,意为拉紧,挤压;最初源自古典拉丁语的stringere,意为拉紧,绑紧。
用法辨析
- strain的基本意思是“拉紧”,强调过度使用、过于操劳、过于用力致使身体的某部分肌肉、器官损伤,可特指肌肉或韧带拉伤。引申指“竭尽全力…,努力…”。
- strain既可用作及物动词,也可用作不及物动词。用作及物动词时,可接名词或代词作宾语。
- strain接介词at表示“拉紧”; 接for或after表示“使劲”。
- strain与stress的区别:过度紧张(strain)是由stress(压力)产生的结果,而压力stress是相邻的物体或部分之间的相互作用,由此可导致物体形态或尺寸的改变;
- strain同sprain的比较:sprain(扭伤)是指脚踝或手腕瞬间扭伤的结果,而strain是肌肉用力过强或过久所导致的结果。
v. (动词)
英汉例句
- The sporters strained and struggled.
运动员奋力扭动摔打。 - They strained the wire between two posts.
他们拉紧了两根电线杆之间的电线。 - The mistake has caused strained relations between the manager and his staff.
这个错误造成了经理同雇员之间的紧张关系。
用作动词 (v.)
用作不及物动词: S+~(+A)
用作及物动词: S+~+ n./pron.
其他
词组短语
- strain one 's ears 竖起耳朵听
- strain every nerve 竭尽全力
- strain excessively 过分地拉紧
- strain feebly 无力地拉紧
- strain furiously 疯狂拉紧
用作动词 (v.)
~+名词
英英字典
- If strain is put on an organization or system, it has to do more than it is able to do.
- To strain something means to make it do more than it is able to do.
- Strain is a state of worry and tension caused by a difficult situation.
- If you say that a situation is a strain, you mean that it makes you worried and tense.
- Strain is a force that pushes, pulls, or stretches something in a way that may damage it.
- Strain is an injury to a muscle in your body, caused by using the muscle too much or twisting it.
- If you strain a muscle, you injure it by using it too much or twisting it.
- If you strain to do something, you make a great effort to do it when it is difficult to do.
- When you strain food, you separate the liquid part of it from the solid parts.
- A strain of a germ, plant, or other organism is a particular type of it.
柯林斯英英字典
专业释义
- 品系
Strain 90-36 has higher defensive ability to light inhibition damage than other three strains.
品系90-36具有相对较强的防御光抑制破坏的能力。 - 菌种
Objective The aim was to determine the optimum compound proportion of strains.
目的确定最佳菌种复配比例。 - 株系
So, we think they are different strains which belong to the same type.
所以,它们应属于同一类病毒的不同的病毒株系。机械工程
- 菌群
There are four main strains including Bacillus licheniformis, Virgibacillus carmonensis, Bacillus sp. TAT112, Bacillus galactosidilyticus in later period.
从中期到后期优势条带相似性较大,菌群群落结构比较稳定,主要优势菌为:Bacillus licheniformis, Virgibacillus carmonensis, Bacillus sp.TAT112, Bacillus galactosidilyticus。