transparency

transparency
/-rənsɪ; -rənsɪ/ n
1 [U] state of being transparent 透明; 明显; 清楚.
2 [C] photograph printed on transparent plastic, so that it can be viewed by shining a light through it; slide1(4a) 幻灯片; 透明正片.

牛津英汉双解词典