书籍 Face2face - 中高级 - 单元 7 - 7D

an official agreement between two or more sides that states what each of them has to do

合同, 契约

a payment system in which one is only able to use a service up to the amount that they have paid for, and payment must be made in advance of using the service

to use the available supply of something, leaving too little or none

用尽, 耗尽

the amount of money that a bank or credit card company lends to a client, often with the expectation of repayment with interest

信用

a system of intersecting lines or channels that form a web-like structure

网络

to end a phone call while the other person is still on the line

挂断电话, 切断通话

the quality or the act of receiving radio, television or cellphone signals

接收, 接收质量

a sound or melody that plays on a mobile phone to alert the owner of an incoming call

铃声, 来电铃声

a system that allows callers to leave recorded messages for someone who is unable to answer their phone

语音邮件, 电话留言

a machine that can automatically answer calls or record messages left by others when connected to one's telephone

电话答录机, 自动应答机

a telephone in a public place that one needs to pay for, mostly by prepaid cards

公用电话, 付费电话

a portable device that combines the functions of a cell phone and a computer, such as browsing the internet, using apps, making calls, etc.

智能手机, 智慧手机

(computing) relating to a technology that helps one type more quickly by finishing their words based on a few first letters

预测的, 预测型（计算机）

a specific function or capability of a device or software

功能, 特性

a display by which the user can interact with a computer, smartphone, etc. by touching its surface

触摸屏, 触控屏