瓶颈: 1. bottleneck2. bottle-neck3. choke point Examples:啤酒瓶底的沉淀物一到瓶颈部位，就不要往外倒啤酒了。此时你的一杯啤酒会金灿灿地发亮，酒泡鼓出酒杯口，而又不会溢出杯外。As soon as the sediment starts creeping up the shoulder of the bottle, stop pouring. You should now have a glass of star-bright beer with a head(of foam) that stands proud of the glass but does not overflow. 瓶颈the neck of a bottle瓶颈a neck of a battle瓶颈制约Bottleneckrestrictions地狭；瓶颈a neck of land; the neck of a flask.瓶颈靠近瓶顶的狭窄部分The narrow part of a bottle near the top.交通瓶颈交通拥挤的地点或地区A point or an area of traffic congestion.夹扁的瓶颈(玻璃瓶缺陷)pinched neck一个塞子塞在了瓶颈处。A cork fits into the neck of a bottle.然后把软木塞放进盛满有色水的瓶颈里。Then push the cork into the neck of a bottle full of colored water.
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