DIVING IN …click anything to hear what it is · 🔬 try the experiment
SUBMARINE · 潛水艇
click anything to hear what it is · 🔬 try the experiment
🔬 LET'S FIND OUT! · 一齊試吓！
tanks full of air · lighter than water → floats
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click anything to hear what it is · 🔬 try the experiment · ➡️ forces · 📖 words