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jackknife    
n. 大折合式刀,镰刀式跳水
vi. 弯身
vt. 用大折刀切

大折合式刀,镰刀式跳水弯身用大折刀切

jackknife
n 1: a large knife with one or more folding blades [synonym: {clasp
knife}, {jackknife}]
2: a dive in which the diver bends to touch the ankles before
straightening out
v 1: dive into the water bending the body at the waist at a
right angle, like a jackknife

Jackknife \Jack"knife`\, n.
A large, strong clasp knife for the pocket; a pocket knife.
[1913 Webster]

75 Moby Thesaurus words for "jackknife":
adz, ax, belly buster, belly flop, belly whopper, bread knife,
bushwhacker, butcher knife, cannonball, carving knife, chaser,
chisel, cleaver, clipper, clippers, crash dive, dagger, dive, drop,
fall, gainer, gouge, hack, hatchet, header, hoe, hunting knife,
knife, lance, lancet, letter-opener, machete, mattock, nippers,
nose dive, paper cutter, paper knife, parachute jump, paring knife,
penknife, pick, pickax, pitch, plowshare, plunge, pounce,
power dive, razor, razor blade, running dive, saw knife, sax,
scalpel, scissors, scoop, scraper, scuffle hoe, scythe, share,
shears, sheath knife, sickle, sidecutters, sky dive, snips, spear,
spokeshave, stationary dive, stoop, surgical knife, swan dive,
swoop, sword, table knife, wedge



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  • JACKKNIFE Definition Meaning - Merriam-Webster
    The meaning of JACKKNIFE is a large strong pocketknife How to use jackknife in a sentence
  • Jackknife resampling - Wikipedia
    In statistics, the jackknife (jackknife cross-validation) is a cross-validation technique and, therefore, a form of resampling It is especially useful for bias and variance estimation The jackknife pre-dates other common resampling methods such as the bootstrap
  • Jackknife Position: What Is It, Uses, and More - Osmosis
    The jackknife position, also known as the Kraske position, is a variation of the prone position used in certain types of surgery It involves positioning an individual on their stomach (i e , prone) with hips flexed at a 90-degree angle and their head and legs lower than their hips
  • JACKKNIFE Definition Meaning | Dictionary. com
    to bend or double over like a jackknife The prizefighter jackknifed and fell when he was hit in the stomach (of a trailer truck) to have the cab and trailer swivel at the linkage until they form a V shape, as the result of an abrupt stop or accident
  • JACKKNIFE | definition in the Cambridge English Dictionary
    JACKKNIFE meaning: 1 If a truck that has two parts jackknifes, one part moves around so far towards the other part… Learn more
  • Jackknife - Definition, Meaning Synonyms - Vocabulary. com
    A knife with a blade that folds closed is called a jackknife Most jackknives are compact enough to fit in a pocket, but we don't suggest your taking one to school
  • jackknife - Wordorigins. org
    A jackknife is a clasp knife, one where the blade folds into the handle Clasp knives have been around since antiquity, but the term jackknife dates to the mid seventeenth century and arose in the north of England or in Scotland
  • Jack-knife - Etymology, Origin Meaning - Etymonline
    Jackknife, likely American English from 1711, originates from "jack" and refers to a large pocket knife; also means to stab or fold, inspired by the knife’s foldi
  • Jackknife Definition Meaning - YourDictionary
    To fold or double (something or oneself) like a jackknife To cut with a jackknife To bend at the middle as in a jackknife dive To cause to jackknife To turn on its hitch so as to form a sharp angle Slowly jackknife your body upwards as you roll the ball down towards your feet
  • Jackknife Accidents: Causes, Dangers, and What to Do After an Accident
    Learn about the risks of jackknife accidents, common causes, and steps to take after an incident Get expert advice from Richard Schwartz and Associates on how to protect yourself and seek compensation





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