To explain is also to give a reason for doing something:To explain is also to give a reason for doing something:
[ + question word ] He couldn’t explain why he did it.
B1 used to give a reason why something is not possible or trueB1 used to give a reason why something is not possible or true
(用于说明为什么某事不可能或者不真实)只是…,不过… I want to go, except that I\'m tired. 我想去,只是太累了。
A bulb at the connector end provides a reservoir of filling gas which is necessary to give a reasonaA bulb at the connector end provides a reservoir of filling gas which is necessary to give a reasona
在连接体的末端有一个小球,用以贮存所充的气体,其目的是为了使计数器具有适当的工作寿命。