[with obj.]subject to an excessive demand on strength, resources, or abilities 使过度紧张;用…过度 there was a risk he might overstrain his heart. 他有使其心脏不堪重负的危险。
noun
[mass noun]the action or result of subjecting someone or something to such a demand 过分紧张;过分的用劲 overstrain had brought on tuberculosis. 工作过度引起肺结核。