Scientific knowledge
科学认识
🧩 词语组成解析
🗣️ 情景例句
Notices are displayed on the bus asking people not to smoke.
公共汽车上张贴着请勿吸烟的公告。
It's hard sailing when there is no wind.
没有风难航行。
Look at the rain! It's heavy, isn't it?
瞧这雨！下这么大，是吧？