Examples
kē xué科学jiā家men们zhèng正nǔ lì努力zhōng jié终结ài zī bìng艾滋病。
科学家们正努力终结艾滋病。
Scientists are working hard to put an end to AIDS.
真希望科学家们能早点找到艾滋病的治疗方法。
I hope that some scientist will soon discover a cure for AIDS.
避孕套是预防艾滋病和许多其他疾病的有效手段。
Condoms are an effective measure to prevent HIV and many other diseases.