Practitioners
n. 习艺者, 实习者( practitioner的复数形式 ); 从业者（尤指医师）
🗣️ 情景例句
You did a great job.
做得好。
Please show me a large one.
请给我看一件大一点的衣服。
The further off this solid obstruction, the longer time will elapse for the return of the echo.
固体障碍物越远。回声返回所用时间就越长。