He feeds everyone up with his constant appeals for help.

You can send out a call for help over the radio.

你可以通过无线电发出求援信号.

She always turns to him when she is in real trouble.

她真有困难时总是向他求援.

They screamed help from the window of the burning hotel.

他们从着火的旅馆窗口惊叫求援.

We bawled for help but no one heard us.

我们大声求援可是无人听见.

He sent a messenger to Rome to ask the Pope to help him.

他派信使去罗马向罗马教皇求援.

Help was lacking at sea during the storm.

起风暴时海上无处可求援.

The pilot radioed the airport for help.

驾驶员用无线电向机场求援.

The signal for assistance was five shots in quick succession.

求援的暗号就是连发五枪.

Study on CAI Teaching Design in Fine Art Teaching

美术教学CAI课件开发初探

This all changed, thanks to an man named Cai Lun.

这一切都变了,多亏了一个叫蔡伦的人。

The construction model of CAI course work based on the environment of campus network

基于校园网环境下CAI课件的构建模式

Open and Innovation Laboratory Construction based on CAI and Internet

基于CAI和互联网的开放式创新实验室的建设

Development of CAI about course design of mechanical project

机械设计课程设计CAI系统的设计与实现

When Confucius was traveling around all the states, he was once surrounded by crowds in Chen Cai district, and had not eaten a thing for seven days.

孔子周游列国时，在陈蔡地界被当地人团团围住，师徒一行人连续七天没吃到一点粮食。

Development of CAI Software for "Metal Plastic Forming Process"

金属塑性加工学多媒体教学软件的开发

The Main Problems in the Study of CAI Software Evaluation

CAI软件评价研究工作的主要问题

Seeking a new method in English teaching with CAI

运用CAI探求英语教学新模式

CAI Software Package for Experiments for Automatic Control Theory Course

自动控制理论课程实验CAI软件包

Developing CAI Software for Air Status Parameter Calculation in Air-Conditioning System

空调系统常用空气状态参数计算CAI软件的开发

Cai Lun began experimenting with many different materials and different methods to turn those materials into paper.

蔡伦开始用许多不同的材料和方法进行试验,将这些材料制成纸。