It has a " house on its back, " in the shape of a spiral or coiled shell, which is all in one piece, and has a smooth edge.
它总是“背着自己的房子”, 这座一体式的小房子是一个螺旋或者卷曲的外壳, 边缘很光滑。
单词 | spiral shell |
例句 |
原声例句
英国学生科学读本 It has a " house on its back, " in the shape of a spiral or coiled shell, which is all in one piece, and has a smooth edge. 它总是“背着自己的房子”, 这座一体式的小房子是一个螺旋或者卷曲的外壳, 边缘很光滑。 |
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