strain to do sth
表示费力做某事，常用于进行时。
She is straining to lift the heavy box.
她正使劲抬起那个重箱子。
剧烈或强烈的用力
strainings — plural of straining
用力(如肌肉)的行为；紧张。；过滤；用滤器过滤的过程。；应变; 使劲；用力; 滤过
an intense or violent exertion
指用力过度的情况
用力(如肌肉)的行为；紧张。
The act by which one strains. (muscles, etc)
过滤；用滤器过滤的过程。
filtering, the process of passing something through a strainer.
He was straining to lift the heavy box.
他正使劲搬起沉重的箱子。
用法提示：这里'straining'作为动词的现在分词，表示用力或使劲的动作。
She is straining the pasta to remove the water.
她正在过滤意大利面以去除水分。
用法提示：这里'straining'作为动词的现在分词，表示过滤或分离的动作。
The teacher is straining the students' patience with the difficult exam.
老师用难的考试考验学生的耐心。
用法提示：这里'straining'作为动词的现在分词，表示考验或挑战极限。
表示费力做某事，常用于进行时。
She is straining to lift the heavy box.
她正使劲抬起那个重箱子。
表示通过筛子等过滤，宾语是被过滤物。
Straining the pasta removes excess water.
过滤意大利面可以去除多余的水分。
grammar · medium
易错句子He felt a straining in his muscles after the workout.
正确表达He felt straining in his muscles after the workout.
名词 'straining' 是不可数名词，不能与不定冠词 'a' 连用。应去掉 'a'，或改用可数名词 'strain'（如 'a strain'）。
grammar · medium
易错句子She is straining on the rope to pull it tight.
正确表达She is straining at the rope to pull it tight.
动词 'strain' 表示用力拉时，固定搭配介词为 'at'，而不是 'on'。'strain at' 意为用力拉某物，而 'strain on' 不地道。
与“过滤”不同，强调用力或努力
与“用力”不同，强调通过过滤装置分离
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