词性：n. v.
音标： [streɪn]
释义： 压力，重负; 拉力，张力; 拉伤，扭伤; 个性特点; 品系，品种,（动植物的）株系; 类型；品质；个性特点，禀性; （尤指金钱）过多使用
拉伤，损伤; 尽力; 使不堪承受，使紧张; 拉紧; 过滤
The noun strain is a stretch, effort, or exertion. You can strain your ankle, or your little brother can strain your patience.
This word has many, many meanings. Athletes strain their knees, which strains the emotions of their fans. Usually, you have to strain a little to accomplish anything, like getting an A in math. A strain may also be a line, like a line of ancestry, of thought, or a melodic line in music. Maybe you have to strain to hear the quiet flute in an orchestra. Another meaning is to pass something through a filter, like tea leaves.
put/place (a) strain on something 带来巨大困难，负担，压力
strain(s) of 某一种，…的倾向,音乐的旋律