A unicoursal curve is formed by starting at any point on a sheet of paper and drawing a smooth line that may intersect itself . 一条单行曲线是指从纸上任意一点出发画出的一条光滑的可以自身相交的曲线。
The inpocketed vegetal pole cells develop into a sheet of cells which grows upward and eventually encloses a cavity, the archenteron . 内褶的植物极细胞生成一片向上生长的细胞，并最后围成一个腔，即原肠。
With much bodily toil and mental travail he wrote the decree upon half a sheet of foolscap and then copy it upon the other . 他用尽全身气力，绞尽脑汁在半张大页书写纸上写下判决词，然后又抄到另外半张纸上。
On a sheet of ice in lake placid , new york 在纽约， lake placid的冰面上一决高下
A sheet of hammered , rolled , or cast metal 金属板锻造、轧制，或铸造而成的金属板
On a sheet of ice in lake placid , new york 在纽约， lake placid的冰面上一决高下
Curling is a game played on a sheet of ice 冰上溜石游戏是一种在冰上玩的运动。
She wrote her name and address on a sheet of paper 她把名字和地址写在一纸上。
The engraving was rolling up in a sheet of tissue paper 版画裹在一张薄纸里。
Taking a sheet of paper , he began to compose a letter 他拿了一张纸,开始写起信来。
