Heterocyst
[生]异形细胞
🗣️ 情景例句
I think it will be a mutually beneficial relationship.
我认为那将是对双方都有利的关系。
A work ill done must be twice done.
未做好的活，需要重新做。
I'd like to pick sea shells this afternoon.
今天下午我想去捡贝壳。