英语语法分析

Because both knees are always tetanic, lower back's muscle will burden all weight.

因为双膝一直僵直，那么整个重量势必都将由下背部的肌肉负担。

Purpose: an effective treatment for burns complicated by tetanic infection was discussed.

前言：目的：商讨烧伤合并破伤风感染的有效治疗方法。

The animals with poisoning died due to respiratory failure caused by persistent tetanic convulsion.

中毒动物因持续强直性惊厥导致呼吸衰竭死亡。