The program must describe how employee proficiency will be maintained.
该计划必须说明如何保持员工的熟练程度。
Oak Grove offers a highly selective ESL Immersion Program to motivated students with intermediate English proficiency.
橡树林学校提供精选的封闭式esl课程，鼓励他们取得中级英语水平。
Proficiency in program teaching of industrial robots, master welding technical knowledge, with robot welding experience.
熟练进行工业机器人的示教，掌握焊接的工作原理，具备机器人焊接加工经验。
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