| 单词 | loop | 
| 释义 | Word Frequency loop 1(luːp) noun 1.  the round or oval shape formed by a line, string, etc, that curves around to cross itself 2.  any round or oval-shaped thing that is closed or nearly closed 3.  a piece of material, such as string, curved round and fastened to form a ring or handle for carrying by 4.  an intrauterine contraceptive device in the shape of a loop 5.  electronics a.  a closed electric or magnetic circuit through which a signal can circulate  b.   short for loop aerial  6.  a flight manoeuvre in which an aircraft flies one complete circle in the vertical plane  7.  Also called: loop line mainly British a railway branch line which leaves the main line and rejoins it after a short distance 8.  mathematics, physics a closed curve on a graph   hysteresis loop 9.   another name for antinode  10.  anatomy a.  the most common basic pattern of the human fingerprint, formed by several sharply rising U-shaped ridges    Compare arch1 (sense 4b),  whorl (sense 3)b.  a bend in a tubular structure, such as the U-shaped curve in a kidney tubule (Henle's loop or loop of Henle) 11.  computing a series of instructions in a program, performed repeatedly until some specified condition is satisfied  12.  skating a jump in which the skater takes off from a back outside edge, makes one, two, or three turns in the air, and lands on the same back outside edge 13.  a group of people to whom information is circulated (esp in the phrases in or out of the loop) verb 14. (transitive) to make a loop in or of (a line, string, etc) 15. (transitive) to fasten or encircle with a loop or something like a loop 16.  Also: loop the loop to cause (an aircraft) to perform a loop or (of an aircraft) to perform a loop 17. (intransitive) to move in loops or in a path like a loop Word origin C14: loupe, origin unknownWord Frequency loop 2(luːp) noun   an archaic word for loophole  Word origin C14: perhaps related to Middle Dutch lupen to watch, peer | 
	
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