TOPIC翻譯：話題;主題。了解更多。 Our discussion included topics such as acid rain and the melting of polar ice. 我們的討論涉及各種話題，例如酸雨和極冰融化。
TOPIC翻译：话题;主题。了解更多。 Our discussion included topics such as acid rain and the melting of polar ice. 我们的讨论涉及各种话题，例如酸雨和极地冰层融化。
TOPIC definition: a subject of conversation or discussion. See examples of topic used in a sentence.