天文学家发现了一颗新的近地小行星，正在密切监测其轨道。

Astronomers have discovered a new ___NEA and are closely monitoring its orbit.

全国教育协会为教师提供专业发展资源。

The ___NEA provides professional development resources for teachers.

她最近的检查结果显示无疾病活动迹象（NEA），这非常令人鼓舞。

Her latest test results indicated ___NEA, which was very encouraging.