| 单词 | stalactite |
| 释义 | stalactite (once / 9625 pages) n Bats and stalactites like to hang out in caves. Those pointed pieces of rock that dangle from the roof of a cave are called stalactites. Most stalactites are primarily made of limestone or lava. Bats? Flesh and blood. Stalactites are the mineral formations that hang down like rock icicles, while stalagmites rise up from the floor. The word stalactite comes from the Greek word for "dripping," stalaktos, which in turn comes from the verb stalassein, "to trickle," which is how stalactites are formed. Water comes down through the top of the cave, bringing rock minerals with it that eventually form those pointy stalactites. WORD FAMILYstalactite: stalactites USAGE EXAMPLESWe entered caves where people hid during the First Indochina War and where giant stalactite formations resembled pumpkins, owls, octopuses and turtles. New York Times(Sep 28, 2016) As you enter, the walkway you traverse winds around spot-lit, saber-toothed stalactites and stalagmites. Slate(Aug 10, 2016) A bridge over a canyon takes you into “Spaghetti Hall,” named for the long, skinny stalactites that seem to be dripping from the ceiling. Seattle Times(Jun 07, 2016) n a cylinder of calcium carbonate hanging from the roof of a limestone cave Hyper cylinder a surface generated by rotating a parallel line around a fixed line |
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