strain单词用法

strain这个单词意思极多。字典里面的意思也基本上都见过了，下面我来总结一下：
名词：1，表示压力，拉力，其意义可抽象，可具体。
Their marriage is under great strain at the moment.(抽象）
stresses and strains
The ground here cannot take the strain of a large building.（具体）
2，拉伤，如肌肉的拉伤 a leg strain腿部拉伤
3，重压出现的问题或担忧 The transport service cannot cope with the strain of so many additional passengers.
4,动、植物的）系，品系，品种；（疾病的）类型
a new strain of mosqiotoes resistant to the posion
5,个