It would be impossibly inefficient to maintain ten million separate standing armies, so each variety of white cell keeps only a few scouts on active duty.

要同时维持1000万支不同常备军，那是不可能，也是无效，此每种白细胞只留下几名哨兵在服现役。

Pilates came to believe that modern lifestyle, bad posture, and inefficient breathing lay at the roots of poor health.

彼拉提斯开始相信现代生活型态、不正确姿、无效呼吸为不良健康状态扎根。

Excursions also include scenic views from the bus and the stress-free efficiency of getting smoothly from point to point.

-短途旅行还包括从巴士上欣赏景从一点到另一点无压力效。