My friend Dai Kui plays the zither so well.

Very like flute, and to be good at zither.

非常喜欢长笛，还擅长古筝演奏。

A trapezoidal zither whose metal strings are struck with light hammers.

用轻锤击打金属弦的梯形筝。

But if you write an angry e-mail, don't hit send.

但是如果你写了一封言语唐突的电子邮件，不要忙着寄出去。

Let's make some kites in today's art and craft lesson.

让我们在艺术手工课上作一些风筝。

If it gets cold enough, the lake will freeze, and we can go ice-skating!

如果天气够冷，湖会结冰，我们可以去溜冰。

I go ice-skating twice a week.

我一个星期去二次。

Did he go ice-skating there?

他在那滑冰了吗？

I actually can't go ice-skating.

我其实也不能滑冰。

The mathematical problems in car flow routing are concluded both for setting up the routing and automatic system.

归纳铁路车流径路制定过程中和自动化系统中应用车流径路的数学问题。

On the contrary, for large car flow direction, the fixed consist train is better.

反之，对于大车流方向，更适宜于定编列车。

Mathematical Problems in Car Flow Routing

论铁路车流径路的数学问题

Car flow detection algorithm.

智能交通流检测算法。

Study on the Optimization of Car Flow Organization for Loading Area Based on Logistics Cost

基于物流成本的装车地车流组织优化模型研究

Marshalling yards, as the basic production units of railway network, are the important car flow distribution centers and transportation hubs.

编组站作为我国铁路网的基层生产单位，是铁路网上重要的车流集散地和交通枢纽。

Route Optimizing Method of Loaded Car Flow with Capacity Limit in Railway Network

具有能力限制的路网重车流径路优化方法

Research on Key Technology in Vehicle Flow Extraction Based Traffic Video

基于交通视频的车流量提取的关键技术研究

This paper design and realize a vehicle flow detection system.

本文设计实现了一个车流检测系统。

The implementation of an adaptive vehicle flow traffic light control system

一种车流量自适应交通灯控制系统的实现

The pollutant concentration is positively correlated with the traffic vehicle flow, and negatively correlated with the wind speed and the temperature.

污染物浓度与车流量成正相关，与风速、温度成负相关。

A jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed stream.

“超音速”“火箭式”“喷燃器”基于空气动力学的推进喷气和火箭发动机内部产生高速流。