n.
(船的)龙骨
tricangular keels of ice cake
浮冰块三角剖面水下部分
-同义词和反义词
词性:noun
例句1. she sat on the upturned keel of the boat’
-keels的不同词性形态
词组
noun
1.A flat-bottomed boat of a kind formerly used on the Tyne and Wear Rivers for loading ships carrying coal.
‘The earliest recorded use of Keels for transporting coal on the Tyne is in the early 1300’s.’
‘The original Tyne keel was clinker-built but later types were of carvel build.’
2.A prow-shaped pair of petals present in flowers of the pea family.
‘The reproductive organs are enclosed within the keel petals.’
‘The keel of A. priceana does not coil after tripping, instead, it bends sharply backwards at the mid-point.’
3.A ridge along the breastbone of many birds to which the flight muscles are attached; the carina.
‘It has a distinct fold of flesh, marked by a line of hair that runs like a keel along its belly.’
‘M. gui’s sternum didn’t have a keel upon which large flight muscles could be attached.’
4.A ship.
‘to buy a new keel with my gold, And fill her with such things as she may hold’
5.The lengthwise timber or steel structure along the base of a ship, supporting the framework of the whole, in some vessels extended downwards as a ridge to increase stability.
‘There was a low scraping sound as the keel of the vessel started the drag against the sandy bottom.’
‘Fiberglass yachts must have a long keel with a keelhung rudder and be descended from a wooden hull design.’
verb
1.(of a boat or ship) turn over on its side; capsize.
‘it’s going to take more wind to make this boat keel over’
‘It proved the final blow for the Neptune; the ship slowly keeled over and sank.’
2.(of a person or thing) fall over; collapse.
‘a wardrobe was about to keel over on top of him’
‘Drew has keeled over to one side of the sofa and is laughing hysterically into the cushions.’
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