Furthermore, the black pigment didn't cause any harm to the water quality, even after being exposed to elements for years.
此外,即使暴露多年,黑色颜料也不会对水质造成任何损害。
精选英语短文
Each sheet contains millions of microcapsules, about as wide as a human hair, filled with negatively-charged white pigments and positively-charged black pigments.