The fireworks supplier must store all black powder in a locked, ventilated warehouse.

煙火供應商必須將所有黑火藥存放在上鎖且通風的倉庫裡。

Please confirm that the shipment of powder is labeled as hazardous before it leaves the dock.

請在貨物離開碼頭前，確認這批火藥已標示為危險物品。

Our museum tour includes a demonstration of how soldiers once loaded powder into muskets.

我們的博物館導覽包含示範昔日士兵如何將火藥裝入火槍。