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。
2
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。
3
Then you can do a direct "ask" after screening the trailer, when people have a deeper understanding of who you are and what you're doing.