实验中用BSA作为蛋白质标准品来校准仪器。

The ___BSA was used as a protein standard to calibrate the instrument in the experiment.

我儿子加入了美国童子军，每周都参加露营活动。

My son joined the ___BSA and goes camping every week.

公司聘请了一位业务系统架构师来优化我们的客户管理系统。

The company hired a ___BSA to improve our customer management system.