yóu / yú / ān / quán / fēng / xiǎn / xǔ / duō / guó / jiā / tǎo / lùn / xiàn / zhì / shǐ / yòng / zǐ / mǔ / pào / dàn由于安全风险,许多国家讨论限制使用子母炮弹。Because of the safety risks, many countries are discussing restrictions on the use of cluster bombs.