determine on与decide on的区别

determine on有决定、确定要做什么的意思； 而decide on 有选定、决定的意思。

They tried to determine the highest speed of the machine through a number of tests.

他们试图通过几个实验来确定机器的最高速度。

He has decided on his career as a vet.

他选定兽医为自己的职业。