Improver
n. 改良者, 改善者\\n[化] 改进剂; 助发剂; 助白剂
✅ 同义词
🗣️ 情景例句
The times have been very bad.
时机一直很坏。
Do you read advertisements too?
你也看广告吗？
Well, we listened to lectures about pollution, agriculture, nuclear waste, radiation and so on.
噢，我们听取有关污染、农业、核废料、辐射等讲座。