间隙

He is only distantly connected with the family.

他与这家人仅仅是远亲。

A clinical effective rate of 81.8% was obtained after treated with doxofylline for 1 week or 6 weeks,with a lung-function improve drate of 59.1% similar to those of sustained-released theophylline.

连续给药1周或4周，试验组临床有效率为81.8%。连续给药后PEF明显升高，肺功能改善有效率为59.1%。上述结果均与对照组相似。