Oxylactone
羟(某)内酯
🗣️ 情景例句
Happy Thanksgiving.
感恩节快乐。
Aren't they students?
他们不是学生吗？
Spiders are not insects, as many people think, nor even nearly related to them.
许多人认为蜘蛛是昆虫，但它们不是昆虫，甚至与昆虫毫无关系。