Nitrosomas
亚硝酸菌
🗣️ 情景例句
was supposed to be made into a community center
原计划改成一个社区交谊中心
Treat it with respect.
请你放尊重点！
In the evenings he studied hard for his exams, and most mornings he took tourists around Oxford.
他晚间努力学习，以应付考试，而大多数早上，他则带领游客在牛津大学参观。