Hallachrome
红痣素, 多巴色素, 黑拉虫色素
🗣️ 情景例句
The Post Office aims to improve its quality of service.
邮局锐意改善服务质量。
Please open your baggage.
请把你的行李打开。
They were in fashion last year and the year before last.But they're not in fashion this year.
这鞋在去年和前年时兴，而今年已不流行了。