Cambial
形成层的
🗣️ 情景例句
Good-bye.
再见。
He that boasts of his own knowledge proclaims ignorance.
夸耀知识实乃无知。
Bison were killed for their meat, while their fur provided warm clothing during cold winters.
他们杀野牛，吃野牛肉，用野牛毛皮制成冬季御寒的衣服。