sound energy 🇸🇬 PSLE 📖 n 🔊 /saʊnd ˈɛnədʒɪ/ 中文释义 声能 例句Sound energy is produced when objects vibrate. PSLE 小六会考词汇中的其他单词independent variableelusivespring balanceseed dispersalpulsevexclassificationmechanicalmeltingleafflowerdefer