The blue crystals are additives that keep the lit cigarette burning by producing oxygen.
上面的蓝色晶体是能产生氧气使烟能持续燃烧的添加物。
The general idea is that you need a direction vector that is orthogonal to the lit surface.
总的来说，您需要一个与照射平面相垂直的方向向量。
1 a.m. - If you still have the energy, take a cab to Qasioun mountain for a view of the lit city below. Stalls on the uppermost roads sell coffee and grilled corn.
凌晨1点，如果你还有精力，可以打个车去Qasioun山去看看这个光亮的城市，山顶路边的小店有卖咖啡和烤玉米。
Those rays from the sun directly reflected from the lit side of the rings onto the planet strike and illuminate the night-side southern hemisphere, as seen in the full resolution.
那些来自太阳的光线实则反射自光环的明亮面，然后投至土星隐没在黑夜中的南半球，正如图中所示。
The room was lit by spotlights.
房间被聚光灯照亮。
The bedroom was lit by a single candle.
卧室被一支蜡烛照亮。
The shooting-range is lit from underneath by rows of ruby-red light fixtures.
射击场被一排排宝石红照明装置从下面照亮。
A crystal chandelier lit the room.
一盏水晶吊灯照亮了房间。
A few gleams of sunshine lit up the gloomy afternoon.
太阳的光线使阴暗的下午亮了起来。
The room was lit by only the one light.
这个房间只有这一盏灯照明。
The flare of the match lit up his face.
火柴的光照亮了他的脸。
Another flash of lightning lit up the cave.
又一道闪电照亮了那个洞穴。
It was dark and a giant moon lit the road so brightly you could see the landscape clearly.
天黑了，一轮明月照亮了道路，你都可以清楚地看到风景。
蜡烛都点着了。
The stairwell was lit by a single bulb.
楼梯间只有一盏灯照明。
There was an explosion and the whole sky lit up.
一声爆炸照亮了整个天空。
Her hand was just visible in the dimly lit room.
她的手在这个昏暗的房间里勉强可见。
After drawing the curtains, she lit a candle.
拉上窗帘后，她点了一根蜡烛。
The room was softly lit by a lamp.
屋里点着一盏灯，光线很柔和。
The door opened onto a well-lit hallway.
这扇门对着一个照明很好的门厅。
He ignored all the 'No Smoking' signs and lit up a cigarette.
他无视所有“禁止吸烟”的警示，点了香烟。
She tore off the cellophane, pulled out a cigarette, and lit it.
她撕开玻璃纸，拿出一根香烟并点着。
His eyes lit up when she walked into the room.
看见她走进房间，他两眼一亮。
The nights were pure with cold air and lit with stars.
那些夜晚十分清静，空气清凉、繁星点点。
Richard lit another cigarette and puffed smoke toward the ceiling.
理查德点上另一支烟，将烟雾喷向天花板。
He lit a cigarette and perched on the corner of the desk.
他点了一支烟，轻轻地坐在书桌角上。
She crossed the softly lit room.
她穿过灯光柔和的房间。
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