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1·Then two detectives guarded the dorr and two detectives opened the baggaed.

这时两个侦探把住门口，另外两个侦探打开了包裹。

2·Dorr is well-acquainted with agribusiness, having run a family farming company for 30 years.

多尔本人曾经营一家家庭农业公司长达30年，因此对农业企业十分熟悉。

3·The first Dorr-Oliver single-tank reactor installation was based on a small-scale pilot-plant study done in 1959.

第一个多尔-奥利佛单槽反应器是以1959年完成的小型试验为基础的。

4·Grains Council President Thomas Dorr has told Dow Jones Newswires in the past that China should help global grain producers plan ahead by being clearer about the extent of its needs.

Grains Council总裁托马斯·多尔Thomas Dorr此前曾告诉道琼斯通讯社Dow Jones Newswires，中国应该通过提高粮食需求数据的准确度，以帮助全球粮食生产商提前规划生产。