n.河段;流域;(上、中或下)游;(外)围;(远)处;(组织或机构中的)层级;
v.到达,抵达(reach的第三人称单数);
例句:
A tree reaches out its branches towards the light.
树枝向阳光处伸展.
The tax bill reaches into thousands of dollars.
应付的税款高达数千美元.
Traffic reaches its peak between 8 and 9 in the morning.
上午8、9点钟之间是交通高峰期。