If water had a negative index of refraction, then a straw placed in a glass would appear to bend back under itself.
如果水具有负折射率，那么放在玻璃杯中的吸管似乎可能弯曲到自身下方。
This photograph is reproduced as a negative to show the glass image as a positive.
这张照片被复制成正片一样，实际上是显示玻璃影象的负片。
To differentiate the volumes theglass front of the each box is a slightly different tint of green and the negative space between boxes is clear glass.
为区分盒子的大小，盒子的玻璃幕墙分别采用稍显不同的绿色，而盒子之间则用了无色的玻璃。
If someone says something negative about you, don't be a sponge. Let the attack roll off like water on glass.
如有人说起你的是非，千万别当一块“海绵”，让那些攻击性的说话像水在玻璃上一般的流走。
The friend who dismisses your hopes and dreams as unrealistic and is generally negative about your plans. The classic 'glass half-empty' individual.
这样的朋友会说你的希望和梦想都是不切实际的，对你的计划总是持否定的态度。最典型的那种“杯中只剩下一半”的悲观论者。
The friend who dismisses your hopes and dreams as unrealistic and is generally negative about your plans. The classic 'glass half-empty' individual.
这样的朋友会说你的希望和梦想都是不切实际的，对你的计划总是持否定的态度。最典型的那种“杯中只剩下一半”的悲观论者。
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