n (1)河床(bed of a river，stream or canal)[C]：

(2)沟，槽(U-shaped passage for a stream of water or other kinds of liquids)[C]：Heavy rain wore a～in the yard.大雨在院子里冲出一条沟。a sewage～污水沟;irrigation～灌溉渠;

(3)航道(passage of deeper water in a river，harbour or sea through which ships can sail)[C]：～marked by buoys 有航标的航道;The main～s were closed by enemy submarines.主要航道被敌人的潜水艇封锁了。

(4)海峡(narrow stretch of water joining two seas or oceans)[C]：We sailed across the English C～.我们横渡英吉利海峡。

(5)渠道，途径(means of sending or receiving news，information，etc)[C，常 pl(但 sing意义)](fig)：get information/notify the authorities through the usual～s通过通常渠道获得信息/报告当局;go through the official/normal/secret ～s通过官方/正常/秘密途径;have one's own～s of trade有自己的贸易渠道;open new～s of information开辟新的信息渠道;

(6)频道，波段(particular band of radio-waves frequencies used for sending or receiving signals)[C]：The country television has four main～s.这家国家电视台有四个主要频道。Let's see what's on the other～，shall we? 咱们看看另一频道播什么好吗? What's her favourite～? 她最喜欢哪个台? television～s 电视频道;switch to another～换一个频道;

(7)(思想，行为)方法(向)(way，course，or direction of thought or action)[C]：He directed his efforts into other～s. 他把精力用到别的方面去了。need a new～for one's activities需要一种新的行为方式;

vt (1)开渠(航)道(make a channel or channels through or in)[T+n]：The river～(l)ed its course(its way)through the valley/under the ground. 河流穿行于峡谷中/地下。～a street在街上挖沟(引水);

(2)(用渠)疏导(make water or liquid flow in a channel)[T+n，T+n+prep]：Water was～(l)ed into the garden through a ditch.水通过一条小沟引进了花园。～a stream疏导溪流;

(3)导(引)向(direct into a particular course or channel)[T+n，T+n+prep](fig)：～one's abilities into(doing)sth useful把能力用到(做)有用的事情上来;～one's energies into a new scheme 把精力用于新计划;～one's thought towards one phase of the problem把脑子用到问题的一个方面;～North Sea oil revenues into industry将北海石油总收入投向工业;〖同〗direct，guide，lead，route