knot的过去式是什么

1. 节疤，节瘤，疙瘩
2. 结合
3. 结，绳结，结节
4. 硬块，瘤
5. 花结
6. 蝴蝶结
7. 【海】节（=海里/小时）
8. 一小群，一小队
9. 难题，麻烦事

1. 使密切结合
2. 捆扎，包扎，束紧，系牢
3. （把…）打结，把...连结，成结
4. 纠集
5. （使）纠缠，缠住，（使）纠结，缠结
6. 形成硬块
7. 打发髻
8. 滚蛋，见鬼去，别烦人
9. （使）痉挛，紧缩
10. 结成穗，作花结

1. a tight cluster of people or things;

   "a small knot of women listened to his sermon"
   "the bird had a knot of feathers forming a crest"
   

2. any of various fastenings formed by looping and tying a rope (or cord) upon itself or to another rope or to another object
3. a hard cross-grained round piece of wood in a board where a branch emerged;

   "the saw buckled when it hit a knot"
   

4. something twisted and tight and swollen;

   "their muscles stood out in knots"
   "the old man's fists were two great gnarls"
   "his stomach was in knots"
   

5. a unit of length used in navigation; exactly 1,852 meters; historically based on the distance spanned by one minute of arc in latitude
6. soft lump or unevenness in a yarn; either an imperfection or created by design
7. a sandpiper that breeds in the Arctic and winters in the southern hemisphere

1. make into knots; make knots out of;

   "She knotted her fingers"
   

2. tie or fasten into a knot;

   "knot the shoelaces"
   

3. tangle or complicate;

   "a ravelled story"
   

1. 结头：对采用安全特低电压(SELV)无绝缘的正负极间可能发生的短路进行保护能承受相应的测试链试验(6)电缆线或软线不应用直接连在电缆线或软线上的金属螺钉夹紧:对灯具所配的电缆线进行下述试验. 不得采用将电缆系成结头(KNOT)或端部绑线的办法对采用安全特低电压(SELV)无绝缘的负级间,

1. He made a knot in the rope.
   他在绳子上打了个结。
2. She loosened the knot.
   她把结解开了。
3. A knot of people stood talking outside the door.
   一群人站在门外聊天。
4. People were standing about in knots, waiting for the news.
   人们三五成群地站着等候消息。
5. A knot sometimes forms in a tired muscle.
   疲乏的肌肉上有时会起硬块。
6. There is a knot in the plank.
   木板上有个节疤。
7. The steamer makes 20 knots an hour.
   这艘轮船的时速是20海里。
8. The ship was going at a good rate of knots.
   这艘船在高速航行。

1. My thread has knotted.
   我的线打结了。
2. The wire is too stiff to knot easily.
   这根金属线太硬,不易打结。
3. My hair knots easily.
   我的头发爱打结。

1. She knotted the parcel firmly.
   她把那个小包扎得很紧。
2. Knot the end of the thread before you begin sewing.
   先将线打好结您再开始缝纫。
3. The girl knots her hair with a ribbon.
   那个女孩用丝带扎头。
4. He knotted a rope round his waist before he jumped into the water.
   他跳水之前,把一根绳子系在了腰上。
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5. His muscles were knotted with rage.
   他气得连肌肉都暴突出来了。

• do 35 knots时速可达35海里
• loosen a knot把结解开
• make a knot打结

• loose knot易解开的结
• the Gordian knot难办的事,复杂的问题

• bowline knot单套结
• reef knot平结

• in a knot(扎)成一个结

• knots in the mind思想上的疙瘩

• knot the laces把鞋带系紧
• knot one's tie打领结

• knot easily容易打结
• knot firmly〔tightly〕系紧
• knot loosely系得松
• knot up把…结在一起

• knot a rope round one's waist把一根绳子系在某人的腰上
• knot one's hair with a ribbon用丝带扎头发

• ☆ 直接源自古英语的cnotta，意为节。