3,087 个单词和短语 · 21 个主题

词汇

ecosystem

n.L2 进阶B2

生态系统

英文释义 a system formed by living organisms interacting with each other and their nonliving surroundings

作答后解锁

在休闲、新排位或单人练习中遇到这个词并作答,就能解锁完整词条。