常見例句雙語例句He hunkers down by the pit and rakes away the earth from a blackened flat surface with his fingers.他在坑邊磐坐下來，用手指從一個平整的暗色表麪上把土扒開。All sailboats need a keel of board for this reason: the narrow, flat surface of the board or keel produces little drag when the boat moves forward but resists motion sideways.所有的帆船都爲(wèi)了這個理由需要某種龍骨：狹窄平滑的龍骨表麪對於帆船的前行幾乎沒有阻力，但卻能很好抗拒側(cè)移力。(Injecting water back returns the detector to a flat surface.) Injecting water into the chamber of the lens makes the thin membrane become a convex hemisphere.（給艙室注射水使檢測器表麪廻複平坦）注射水進(jìn)入透鏡艙室使得薄膜變成凹半球。原聲例句It is a small device that you move around on a flat surface in front of a computer.The artist draws an image with oily ink onto a piece of stone or other flat surface."Well,one of the things that's interesting about these flexible sheets is that they can be curved, so you could imagine putting them in unconventional forms, like on the surface of a vehicle or something like that, where you don't have a flat surface."權(quán)威例句Set the flat end on a perfectly flat surface, and a bubble of air points straight up.FORBESWhat if all you needed to tap, swipe and type on was a flat surface and projected light?FORBES: Meet The Projector That Could Put The iPhone's Screen On Your DeskBefore, 50-year-old Trevor Prideaux had to balance the phone on his arm or put it on a flat surface.FORBES: Man Installs Nokia Phone In His Prosthetic Arm 返回 flat surface