Seleniol
胶态硒(治癌)
🗣️ 情景例句
The good news is that the Levinsons have come by
好消息是Levinson夫妇已来这儿
Would you care for a cup of coffee?
你要不要来杯咖啡？
Has it got anything to do with your present research?
报告跟你目前的研究有关吗？