英语语法分析

Objective To investigate the changes of plasma thyroid hormones during and aller heart surgery.

目的观察心脏手术期间及术后血浆甲状腺激素的变化规律。

Sometimes they also attend a sm aller class to ask questions and discuss wh at the professors ays.

有时他们也上小课，提出问题并讨论教授所讲内容。

I told him Frank Aller, whom I identified only as my roommate, was one of the bravest, best men I know.

我告诉他，弗兰克·阿勒——我信中所称的是“我的室友”——是我认识的人里面最勇敢、最优秀的一个。