| tide |
the rise and fall of ocean waters, on a definite time schedule. Both the sun and the moon exert a gravitational pull on the earth.
출처: www.portbris.com.au/education/teaching/glossary.ht...
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| tide |
vertical rise and fall of water caused by gravitational attraction, principally of the moon. Tiller: an attachment to the rudder, of wood or metal, by which the rudder is controlled. Trim: to adjust the sheets of a boat
출처: www.no-barriers.com/glossary.html
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