会用
基于1个网页-相关网页
ability of practical use
实际运用能力
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Up until recently, and barring the use of Bluetooth headsets, the constraints defining the upper practical limit of a phone included the ability to fit into a pocket and be held against the side of an (adult) head to facilitate a voice call.
ENGADGET: Switched On: Tablets offer a new choice for voice
应用推荐
模块上移
模块下移
不移动