switch
n
1
(a) device for completing or breaking an electric circuit （電路的）開關(guān), 電門, 轉(zhuǎn)換器, 閘: a light switch 燈的電門
press the on/off switch 按開關(guān)通電[斷電]
a two-way switch, eg at the top and bottom of a staircase 雙路開關(guān)（如樓梯上下兩端的）.
(b) device at the junction of railway tracks to allow trains to go from one track to another （鐵路的）道岔,轉(zhuǎn)轍器.
(c) (US) = points (point1 18).
2 (also `switch-over) (infml 口) (esp sudden) shift or change （尤指突然的）轉(zhuǎn)變, 改變
Polls showed a switch to Labour. 民意測驗表明形勢轉(zhuǎn)而對工黨有利.
a switch from gas to electric 由使用煤氣改為使用電氣
make a switch from publishing to teaching 由出版工作改做教學(xué)工作
a switch in method, policy, opinion 方法、 政策、 觀點的改變.
3 thin flexible twig or shoot cut from a tree; tapering rod like this used for urging a horse, etc forward （從樹上砍下的）細(xì)軟枝條; （策馬等用的）枝條狀的鞭子.
4 piece of real or false hair for making a woman's hair appear thicker or longer （女用）假發(fā). switch, v
1 [I, Ipr, Ip, Tn, Tn.pr, Tn.p]
~ (sth) (over) (to sth) (cause sth to) shift or change, esp suddenly （使某事物）轉(zhuǎn)變或改變（尤指突然）
switch to modern methods 改用現(xiàn)代方法
Many voters switched to Labour. 許多選舉人改投工黨的票.
Computers are everywhere now our firm is switching over soon. 計算機現(xiàn)已普及--我公司亦即將使用.
switch the conversation to a different topic 改變談話的話題
Could you switch the TV over? 請你改換電視頻道好嗎?
2 [I, Ipr, Ip, Tn, Tn.pr, Tn.p]
~ (sth) (with sb/sth); ~ (sth) over/round (cause sb/sth to) exchange positions; change over （使某人[某事物]）交換位置; 轉(zhuǎn)換
Our glasses have been switched this is mine. 咱們的玻璃杯對調(diào)了--這個是我的.
Husband and wife should switch roles (with each other) occasionally. 夫妻間應(yīng)該偶爾（彼此）對調(diào)充當(dāng)?shù)慕巧?
You drive first and then we'll switch round/over. 你先駕駛, 過一會兒咱們再換著開.
3 [Tn] whip or flick (a horse, etc) with a switch(3) 用鞭子等抽打（馬等）.
4 [Tn.pr] move (a train, etc) onto another track 將（列車等）轉(zhuǎn)入另一軌道
switch a train into a siding 把一列火車轉(zhuǎn)入支線軌道.
5 (phr v) switch (sth) off disconnect (electricity, etc) 切斷（電流等）
Switch off the gas, power, etc at the mains 切斷煤氣源、 電源等
Don't switch (the TV) off yet. 暫時不要關(guān)掉（電視機）. switch (sb) off (infml 口) (cause sb to) become dull, bored, etc （使某人）感到乏味、 厭煩等
I switch off when he starts talking about cars. 他一談起汽車我就厭煩.
Long lectures really switch me off. 我覺得冗長的演講很煩人. switch (sth) on connect (electricity, etc or an appliance) 接通（電流等）; 開（用電器）
Switch on the light at the wall-socket. 把電燈接通在墻上的電源插座上.
Don't switch (the radio) on yet. 暫時不要打開（收音機）.