The discovery of the sulfas came about as a direct offshoot of the approach used by Ehrlich: the large-scale screening of chemicals for activity in infectious diseases in experimental animals.

磺胺的发现来自于艾尔·利克方法的一个直接分支：在实验动物体上大范围筛选针对传染病的化学物质。

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Provides direct patient care in the clinical setting including: assessment, screening, diagnosis, and treatment of patients.

为病人直接提供治疗，包括：评估，检查，诊断，治疗等。

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Now the most common method to detect EGFR gene mutations was direct sequencing, expensive and time consuming, which didn't fit clinical screening.

目前检测EGFR基因突变的方法主要是直接测序，费时，费用较高，不适合用于临床筛查。

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The excerpts provided no direct evidence that Washington had ordered that screening.

NPR: House Panel: Report Finds $50M For IRS Conferences

Just last month, the U.S. State Department said, in a report, that Canada's lax screening of immigrants and refugees was a direct security threat to the United States.

NPR: U.S. Worries as Canada Welcomes New Immigrants