A 'helioscope' is an instrument for viewing the sun without injury to the eyes.
“helioscope”这个名词是指太阳目视镜或太阳望远镜。
| Front | helioscope [heli;-o-;-scope n.] |
|---|---|
| Back | n.太阳目视镜； 太阳望远镜 |
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