o.ver.strain
v.(动词)o.ver.strained,o.ver.strain.ing,o.ver.strains v.tr.(及物动词)To subject to excessive strain, especially to force beyond a natural or proper limit:使过度紧张:使过度紧张,尤指超过自然或适当限度地强迫:例句:overstraining the environment.使气氛紧张
v.intr.(不及物动词)To put forth too much physical effort.过分使劲:付出过多的体力