重灾年
重灾年
他对员工说,今年是严肃的一年,并解释类似的装扮也能让大学预科生看上去更加庄重些。
The pollution of ammonia nitrogen is serious year by year in inner-river and becomes the main pollution factor though its concentration varies with different seasons.内河涌的氨氮污染逐年严重,并呈现季节性的变化,已成为最主要的污染因子。
The effective measures must be taken to reduce the HIV prevalence as soon as possible for the HIV infections in Yunnan are becoming more and more serious year by year.对于年趋严重的HIV感染疫情,必须迅速采取有效的预防措施来降低流行率。