您要查找的是不是：
- Unsafe filters include color film, some non-silver black and white film, medical x-ray films with images on them, smoked glass, photographic neutral density filters and polarizing filters. 任何彩色负片、不含银的黑白负片、被烟熏黑的或用墨汁涂黑玻璃片、太阳眼镜、拍摄用中性减光滤镜、偏振镜、磁盘、光盘等，都是不安全的，肉眼看不见的光线（比如红外线）可能大量穿透这些物品，长时间观看会对眼睛造成很大伤害，因此请不要使用这些替代品进行观日。专业的日食观测镜请到专业可信赖的机构购买。
- Linear gradient neutral density filter 线性变密度中性滤光片
- nd (neutral density) 中性密度
- He has a rather neutral character. 他品性平平。
- That country remained neutral in the war. 那个国家在那场战争中保持中立。
- Put the gear lever in the neutral position. 把变速杆推到空挡的位置。
- He pushed the handle into neutral. 他将手柄扳到空挡。
- The water was of a pale, neutral color. 这水是一片淡灰色。
- He remained neutral during the debate. 他在辩论中保持中立。
- When you start the car, make sure it is in neutral. 确定在空档才发动车子。
- I waited, but her eyes were neutral. 我等着她的反应，但她的眼睛没有露出情感有什么变化。
- The density of population in this city is very high. 这个城市的人口密度非常高。
- Neutral state in the area have tried to bring an end to the war. 该地区的中立国为结束战争作出了努力。
- A nd give us strength to help those in need. 给我们坚强去帮助那些需要的.
- The area had a population density of five people per square mile. 该地区人口密度为每平方英里五人。
- Nd... oh, it's too complicated to explain! 他已经跟她结了婚，可她又爱上他姐夫，而且...哎，太乱了，说不清。
- A neutral tie can be worn with a shirt of any colour. 暗灰色的领带配什麽颜色的衬衣都行。
- Our team had a hot streak going in the2 nd quarter. 我们队在第2节的（球）赛中状态不错。
- It's upstairs. It's on the 2 nd floor. 在楼上，在二楼。
- Let's. nd a buffet with moderate prices. 我们找一家价格适中的自助式餐馆。
