strain的解释，在云词典中strain是什么意思？

strain

[strein]
n.
过度的疲劳, 紧张, 张力, 应变
vt.
扭伤, 损伤
v.
拉紧, 扯紧, (使)紧张, 尽力

"Don't strain after effects!" "Read the speech naturally."
"别做作！""读讲稿时自然点！"
A device for equalizing pressure or strain.
均衡器用来使电压或电流保持平稳的设备
A painful condition of the lower back, as one resulting from muscle strain or a slipped disk.
腰痛背部下部的疼痛状态，就象由于肌肉紧张或脱臼引起的疼痛
A stay for racing or cruising vessels used to steady the mast against the strain of the gaff.
稳定索，分隔索赛艇或巡逻艇上的支索，为防止斜桁的张力而用于稳定桅杆
A sudden and severe strain was placed upon us by the cutting off of these supplies.
由于供给突然被切断，我们感到了沉重的压力。
A sudden, involuntary, spasmodic muscular contraction causing severe pain, often occurring in the leg or shoulder as the result of strain or chill.
痉挛一种由于紧张或寒冷而导致的肌肉突发性、无意识的、间歇性的紧缩，能导致剧烈的疼痛，通常发生在腿部或肩部
All her senses were on the strain when the test was going on.
测试时，她所有的感官都处于紧张状态。
All this additional work, and my present worries, are placing an unbearable strain on me.
所有这些额外的工作加之我眼下的烦恼令我紧张得无法忍受。
Could you stand the strain? Oh, that's nothing.
这样累你受得了吗？这没什么。
He broke under the strain of heavy work.
他在繁重工作的压力之下累坏了。