1.
A Study on Workflow Management System for Virtual Distribution Center in HAD Environment;
HAD环境下的虚拟配送中心工作流管理系统研究
2.
A detailed study of the semi-auxiliary Had Better;
半助动词Had better用法探微
3.
The real usage of phrase"had better;
Had Better短语的真实用法
4.
When do we use "had had"? Can you give me an example?
我们什么时候用“had had”?你能给我举个例吗?
5.
"When do we use "have had "? Can you give me an example ? "
"我们什么时候用""had had""?你能给我举个例吗?"
6.
When do we use " had have "? can you give me an example?
我们什么时候用"had had"？你能给我举个例吗？
7.
For example, in the following sentence the word" had" is understood.
例如在下面句中，had一字就省略了。
8.
causative verb
使役动词(Ihadmyhaircut中的had为使役动词之一)
9.
environmental standard
环境保护标准，环境标准
10.
Tourism Environment and Preservation
旅游环境与环境保护
11.
COBOL environment division
ＣＯＢＯＬ环境部分
12.
Of, relating to, or associated with the environment.
环境的环境的，有关环境的
13.
the present and past perfect tenses,eg `I have eaten'/`I had eaten'
现在完成式和过去完成式（如I have eaten/I had eaten)
14.
(of verb tenses)composed of has/have or had+ past participle
（指动词时态）完成式的（由has/have 或had+过去分词组成）
15.
Proto-oncogene Ret, nNOS and Enteric Nervous System Developmental Malformation-HD, HAD;
原癌基因Ret，nNOS与肠神经发育畸形HD和HAD
16.
habitat isolation
生境[环境，生态]隔离
17.
Convention on Environmental Impact Assessment in a Transboundary Context
越境环境影响评估公约
18.
Aesthetics of Environmental Art:Pursuing Picturesque Environment or keeping Harmony Between Man and Nature or Integrating Natural and Cultural Factors;
环境艺术之美——画境 意境 化境