每部份处理管道的所有高点都应适当通风以便空气排出。
Don not let air escape around your lips and control the air flow well. Try many times, and your will succeed.注意嘴型不要漏气了,好好控制一下气流,多多尝试。
Tip the bottle and jar enough to let a little air escape from the bottle so that the liquid is now up in the neck of the bottle and level with the water in the jar.提示瓶和罐子,足以让一个小瓶子从空中逃脱这样,液体罐在目前的脖子,并在瓶中的水位。