rectum [ˈrɛktəm]

例句:

• The anus and rectum were not designed to be a receptacle for the penis.
  来自SA
• Treatment sometimes involves removing the large intestine including the rectum.
  治疗往往要去掉大肠,其中包括直肠.
  
• Then the lining is separated from the rectum's muscular wall.
  然后将直肠的肌壁与粘膜分离开.
  
• The patient's temperature should be obtained by rectum.
  病人的体温自直肠测得.
  
• Ulcerative colitis involves inflammation of a part of the colon and rectum.
  来自CNN
• Have both a full bladder an a full rectum when you start your treatment.
  来自SA