ForfouryearsNewmanobservedscubadiversastheysimulatedwalkingontheMoonandonMarsonherunderwatermovingbelt.注意这句话中的ontheMoonandonMarsShewantedtodiscoverhowthegravityoftheMoonandofMarswouldaffecthuman

Question

For four years Newman observed scuba divers as they simulated walking on the Moon and on Mars on her underwater moving belt.
注意这句话中的 on the Moon and on Mars
She wanted to discover how the gravity of the Moon and of Mars would affect human movement.
这句话中 of the Moon and of Mars
为什么在这个结构中mars前面没有定冠词the

Answer 1

是这样的,sun 和 moon是特殊的两个星球,此二者前要加the.但太阳系中任何其他星球都不用加the,比如 Jupiter,Venus,Uranus等等,算是约定俗成的,就不必深究原因了,记住就好.