One end of the windpipe is connected with a unidirectional inflating valve.气管的一端与单向充气阀连接.Experiment materials: jar , windpipe, limewater, flume and the experiment record chart for each group.学生用材料: 广口瓶 、 导气管 、 石灰水、火柴、集气瓶...
贵重的展品，呃哼，丢失的话，会众人皆知。It is not unknown for valuable display items to go, ahem, missing.我是，呃，6月底来到这里的。I've been here, oh, since the end of June.我想我应该，呃，和你谈谈。I thought I'd, you know, have a chat with you....