酸雨、越境空气污染的英文：
acid rain and transboundary air pollution
n.
1.[U,C]【化】酸
2.[U] 酸味物质
adj.
1.【术语】酸的；酸性的
2. 酸的；酸味的
3.（言辞）尖刻的；尖酸的
- The somewhat acid flavour is caused by the presence of lactic acid.
这种微酸的味道是因为含有乳酸造成的。 - Acids in the stomach destroy the virus.
胃酸能杀死病毒。 - suffer from acidity of the stomach
患胃酸过多.
n. 雨；降落物；雨季
v. 下雨，降雨；像雨点般落
- What if it rains?
要是下雨怎么办？ - It rained at intervals.
雨时下时停。 - It has stopped raining.
雨停了。
越境的
- The overall goal of the Basel Convention is to establish strict control over transboundary movements of hazardous wastes and other wastes
巴塞尔公约的总体目标是对危险废物和其他废物的越境转移建立严格的控制，