他只能通过一个发声合成器同别人交流。这个计算机式的发声合成器固定在他那装有马达的轮椅上；他吃力地操作键盘，把要说的话一个词一个词地打出来。
He can communicate only through a voice synthesizer, which he operates by laboriously tapping out words on the computer attached to his motorized chair.
外壳是一个用于显示器，键盘和计算机硬件电子产品的桌面式产品。
The enclosure is a rugged desktop cabinet with plenty of room for monitor, keyboard and computer hardware electronics.
该超声波系统使用的是USL标准扩充卡，安装在工业用的计算机里，15”液晶屏幕和抽屉式可锁键盘。
The ultrasonic system uses standard USL expansion boards housed in an industrial computer with a 15" LCD screen and keyboard housed in a lockable drawer."
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