intromission

例句：

1. 1. The doctor inserted a needle into her arm to administer anesthesia.
   医生将针头插入她的手臂以注射麻醉药。
2. 2. The scientist conducted an intromission study on the effects of pollution on marine life.
   科学家对污染对海洋生物的影响进行了一项研究。
3. 3.During the ceremony, the priest performed an intromission to bless the newlyweds.
   在仪式上，牧师进行了一次插入以祝福新婚夫妇。