But another machine in the plant, which USES a laser to scan the passing material, can sort plastic by type and colour with great accuracy.
但是工厂里的另一套设备则不一样了。其利用激光对经过的材料进行扫描，按照塑料的种类和颜色进行分类，且准确率极高。
It works because the receptor proteins in plant DNA respond naturally to threatening stimuli by releasing chemicals called terpenoids to thicken the leaf cuticle, thereby changing its colour.
它的原理在于：当植物蛋白受体受到有害化学物质的刺激时，叶面外皮会释放出一种萜类化合物用以覆盖叶面，因此植物会改变其颜色。
They have taught plant proteins to change colour when in the presence of certain chemicals.
科学家改变了植物的蛋白成分，当它们暴露于某种特定化学品的时候，植物就会改变颜色。
The plant detects the substance and activates an internal signal that causes it to lose its green colour, turning its leaves white.
当植物监测到那些有害物品时就会激发内信号，使叶子从绿色变成白色。
In glorious colour he recorded the plant life he found on special photographic glass plates.
他发现了千姿百态的植物，并将其记录于特制的玻璃质感光片上。
A method of abstracting plant pigment as alternate indicator was described, and the change of colour at different pH ranges in various plant pigmentes was measured.
本文综述了黑色素的理化性质和生理功能，以及林木植物黑色素的分离制取方法，并就黑色素的研究和应用进行了展望。
The bracts protecting the flowers before they bloom can also be very colourful and the colour may turn more vibrant if the plant is given more light during the flowering cycle.
在花盛开之前，护花苞片也同样有着丰富多彩的颜色，如果在花期给予植株更多的光照，它们的颜色会变得更加活力四射。
Snow Face Shining Colour Essence Milk(80ml) Ingredients: Plant combination, fruit extracts (Grapefruit), Vitamin C, liquorice flavone, VB3, red myrrh alcohol, squalane oil, etc.
白皙雪颜焕采精华乳（80ml）主要成份：植物提取物、水果精华（柚子）、维生素C、甘草黄酮、维生素B3、红没药醇、深海鱼油、熊果苷等。
Snow Face Shining Colour Essence Milk(80ml) Ingredients: Plant combination, fruit extracts (Grapefruit), Vitamin C, liquorice flavone, VB3, red myrrh alcohol, squalane oil, etc.
白皙雪颜焕采精华乳（80ml）主要成份：植物提取物、水果精华（柚子）、维生素C、甘草黄酮、维生素B3、红没药醇、深海鱼油、熊果苷等。
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