cenote
(zoology) Any of the spiral gastropods of the genus Rissoa or family Rissoidae, found both in fresh and salt water.
A deep natural well or sinkhole, especially in Central America, formed by the collapse of surface limestone that exposes ground water underneath, and sometimes used by the ancient Mayans for sacrificial offerings.
Any of a group of toxins produced by huntsman spiders
plural of phlebitis
私たちは潜水士を地下水が露出した深い天然の陥没穴に降ろして、その澄んだ水と古い鍾乳石を調査させた。
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