71.籃球粗糙的表面便于球員握球.
The rough surface of basketball is advantageous for the player to grasp the ball.
72.很抱歉讓你掃興,但我恐怕還是不能來.
I'm sorry to let you feel disappointed,but I'm afraid I still can't come.
73成年人和小孩都覺得探索宇宙是一件很刺激的事情.
Adults and children all feel that exploration universe is an exciting matter .
74.我們的注意力已經(jīng)被吸引到焰火奇觀上了.
Our attention is already attracted to the fireworks marvelous sightin.
75.為了講清楚自己的觀點(diǎn),他有解釋了一遍.
In order to say clearly his own viewpoint,he explains again.