例句與造句

1. Above : 3 - dimensional stacked layers of liquid crystal droplets could have some novel and useful effects on light that passes through them . image courtesy nasa
   上圖：液晶微滴層層疊加成的三維體可能對(duì)穿透它的光線產(chǎn)生全新而有價(jià)值的影響。 nasa授權(quán)圖片。
2. It's difficult to find useful effect in a sentence. 用useful effect造句挺難的