翻译:we know that the levels of carbon dioxide have increased greatly over the last 100 to 150 years.
问题描述：
翻译:we know that the levels of carbon dioxide have increased greatly over the last 100 to 150 years.
答
众所周知,二氧化碳的含量在过去的100到150年里增长的很快.����һ�¾��ӽṹ����weν��know�����that��ı���Ӿ䡣�Ӿ���the levels of carbon dioxide �����have increased greatly ��ν�ﲿ�֣� �����ʱ��״�