Is there a letter from them in the mail?

I didn't receive a letter from him yet.

我还没有收到过他的信。

There's a letter for you from your mother.

有你母亲的一封来信。

If there's a letter from France please show it to me.

如有法国来的信，请拿给我看看。

We could write a letter to the director.

我们不妨给主管写封信。

I haven't received a letter from him yet.

我还没有收到他的信呢。

I had a letter from the people who used to live next door.

我接到了过去的邻居写来的一封信。

Experiment on Catfishes ( Parasilurus asotus) Prey upon Reared fishes in pond

鲶鱼对饲养鱼捕食程度的池塘试验

Lemongrass is an aromatic grass used in cooking and herbal medicine.

香茅是一种用于烹饪和草药医学的芳香草。

Aromatic grasses such as lavender and rosemary are often used in aromatherapy.

薰衣草和迷迭香等芳香草常用于芳香疗法。

In Yangon, formerly Rangoon, the broth is made aromatic with lemon grass, ginger and garlic.

在仰光，肉汤中要放入柠檬草、生姜和大蒜调味。

Mandarin Ducks was listed as a Class II key state protection animal of China and BirdLife International ( 2000) listed the Mandarin Duck ( Aix galericulata) as a least concern species.

鸳鸯（Aix galericulata）在我国被列为国家Ⅱ级保护动物，国际鸟类联盟将其列为无危（LC）物种。

New distribution of Aix galericulata in Jilin and its vicinity

鸳鸯在吉林地区的新记录

The panelists are left to compress their inquiries into one good zinger of a question

专家讨论小组的成员剩下的工作就是将他们的质询精简成一个精妙的问题。

Firstly, a three order linear predictor is designed to compress terrain elevation data.

文中首先设计了一个三阶预测器对地形数据进行LPC压缩；

There may be lots of major geological disasters including the experience of large river system, development of major weakness, rich water, good water conductivity fault, there are significant geophysical anomaly segment.

可能存在重大地质灾害地段包括遭遇大型暗河系统，发育重大软弱、富水、导水性良好的断层，存在重大物探异常段。

On Design and Technical Progress of Oil and Gas Pipeline Crossing across Large River

油气管道穿越大型河流设计技术进步简述

On the Government's Role in the large River Basin's Comprehensive Exploitation

论政府在大河流域综合治理开发中的作用

Water Quality Assessment of a Large River Based on Multiple Assessment Method and Cluster Analysis

基于聚类和多重评价法的河流质量评价研究

Design& Development of Large River Drainage Area 3-Dimension Synthetic Information System

大流域3维水情信息系统的设计与实现研究

Data management system of digital elevation model for a large river basin

大流域数字高程模型数据管理系统