A new kind of operation has become possible. Doctors take out part of the human body and replace it with artificial parts. Teeth are replaced with silver or gold, and blood vessels are replaced with plastic tubing. These artificial parts work almost as well as the real ones. People live longer and more comfortable lives thanks to this medical advance.
    一種新的外科手術(shù)變成可能。醫(yī)生把人體的一部分摘除，用人造器官替換。牙齒用銀或金替換，血管用塑料管替換。這些人工器官幾乎和真的器官一樣工作。全靠這些醫(yī)學(xué)的進(jìn)步，人們才得以活的更長壽更舒適。