a．胶头滴管 b．试管 c．普通漏斗 d．量筒 e．酒精灯 f．细口玻璃瓶 g．药匙 h．坩埚钳i．容量瓶 j．分液漏斗 ．冷凝管 l．蒸馏烧瓶
—Pardon? It's difficult to hear your _______ because the _______ of traffic is too loud.
