choke
verb uk/tʃəʊk/ us/tʃoʊk/
(STOP BREATHING)
[ I or T ]（使）窒息;（使）哽噎;（使）呼吸困难
If you choke, or if something chokes you, you stop breathing because something is blocking your throat.
She choked to death on a fish bone. 她被鱼刺卡住后窒息而亡。
Children can choke on peanuts. 小孩子吃花生会噎住的。
Peanuts can choke a small child. 花生会噎住小孩。
[ T ]（掐住喉咙）使停止呼吸，使窒息
to make someone stop breathing by pressing their throat with the hands
(FILL)
[ T usually passive ] (also choke up)堵塞，阻塞;塞满
to fill something such as a road or pipe, so that nothing can pass through
At lunchtime the streets were choked with traffic. 午餐时大街上塞车了。
(FAIL)
[ I ] informal (also choke it)（通常指在运动中关键时刻因丧失信心而）失败；怯场
(usually in sports) to fail to do something at a time when it is urgent, usually because you suddenly lose confidence
He could score points at will during the qualifying matches, but in the final he completely choked. 他在预选赛中总能随心所欲地得分，可到了决赛发挥就完全失常了。
Phrasal verb
choke something back 抑制，强忍住（情感或眼泪）
If you choke back feelings or tears, you force yourself not to show how angry or upset you are.
Choking back my anger, I tried to speak calmly. 我强忍怒气，尽量平静地说话。
"John has had an accident," she said, choking back the tears. “约翰出车祸了，”她强忍住眼泪说。
choke
noun [ C or U ] uk/tʃəʊk/ us/tʃoʊk/
（机动车上的）阻风门，阻塞门
a device in a motor vehicle that changes the amount of air going into the engine, allowing more fuel compared to air to go in and therefore making the engine easier to start