1.It is a small device that you move around on a flat surface in front of a computer.
move around 走來走去;繞著……來回轉
The planets move around the sun in ellipses.
各行星圍繞太陽按橢圓形運轉 。
There is no room to move around.
地方太小,倒不開身 。
2.This interferes with the friends' discussion – just as unwanted sales messages interfere with communication over the Internet.
interfere with 干擾,干涉;妨礙;觸動或弄壞;亂動;與……抵觸
The trees interfere with the view.
那些樹擋住了視線 。
Smoking often interferes with health.
吸煙妨礙健康 。