The mouse is a small, handheld object that is pushed around a desktop to move the cursor on the screen or to select choices from menus displayed on the screen.
鼠标是一个可以用手在桌面上推动的小东西，通过它可以在屏幕上移动光标或者选中菜单上的某项功能。
A finite list of choices; our finite fossil fuel reserves.
为数有限的选择；我们有限的矿物燃料贮量
You have several choices open to you.
有几种可能性供你选择.
