It's a bit like if you're pushing a boat through a river and measuring something about the surface - you don't want to measure the ripples from the boat.
这就有点儿像你将一艘船从河的这边推到另一边，并测量河面上的某些东西，但你不希望连同船儿泛起的涟漪也一并测量出来。
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.
所有的帆船都为了这个理由需要某种龙骨：狭窄平滑的龙骨表面对于帆船的前行几乎没有阻力，但却能很好抗拒侧移力。
As I gradually master my buoyancy and hover 15 feet below the surface, I can see schools of small yellow groupers beneath the dive boat giving wide berth to a blade of a barracuda.
当我逐渐适应了浮力，盘旋下潜到水面以下15英尺以后，就看见成群结队的黄色小石斑鱼为了躲避梭鱼而藏在潜水船下方。
If the boat becomes submerged in high seas, the cabins trap enough air to lift the vessel to the surface.
如果船在风高浪大的海面被淹没，船舱里有足够的空气让船重新浮出来。
The Nine-Bend Corridor west of the Nine dragon Pool leads directly to the Marble boat, which resembles a dragon boat on the water surface.
走廊西部的九龙池直接通向石舫，它很像一个游荡在水面上的龙船。
An anchor permanently installed in a harbor for mooring a sailboat, typically consisting of the anchor, chain to a mooring ball on the surface, and a pennant to which the boat attaches.
一个永久固定在海港的锚，供系泊一艘船之用。通常包括锚体，连接水面一个系泊浮球的铁链，以及一面供船只插的信号旗。
The rudder is a control surface that steers and stabilises the boat.
舵是控制表面，公牛和稳定的船。
The boat floated on the water's surface briefly before disappearing into obscurity.
小船在水面上漂浮了几下便没入了黑暗。
When we got a quite surface, we bought two ladles from indigenes since the water could easily splash into the boat.
我们到达平缓水面时，因船太易溅进水了，便从当地人买了两个舀子。
A small boat floated on the surface of the lake.
一艘小船漂浮在湖面上。
There are, for example, shots where the point of view is below the sea's surface, looking up at the boat and into the sky beyond.
比方说，有些镜头的视角是自海面以下向上望着小船以及小船上方的天空。
On the larboard side of the boat, a huge stone hand was visible just below the water. Two fingers broke the surface.
在船的左舷，一只巨大的石手在水底隐约可见，两只手指伸出水面。
When we got a quite surface, we bought two ladles from indigenes since the water could easily splash into the boat.
我们到达平缓水面时，因船太易溅进水了，便从当地人买了两个舀子。在漂流过程中，我们不断地将水舀出船外。
Other changes start with a ripple before growing into a wave. Even those who are closest to the surface sometimes don't feel their boat rocking.
而另一些变革在掀起浪潮前，只有些许涟漪，即便是在最靠近的湖面上，人们也感觉不到他们的船只正在震动。
When the boat is navigating, the hull loses contact completely with water surface and only four wing wheels are rotating on water surface.
使船舶在产生动力的同时产生升力，船舶行驶时，船体完全脱离水面。
The present invention discloses a method for collecting refuse on the water surface by utilizing boat as carrier and aerating water.
本发明公开了一种利用船为载体收集水面垃圾和对水施行曝气处理的方法。
I also did not want to surface far from the boat I recall that many attacks occur onthe surface.
我不想远离小船浮出水面，因为我回想起水面上会有许多攻击。
The party breaks up at dawn and we get into the boat again and move it into the miles of lotus-covered surface where we catch a nap in an air filled with its fragrance. We have a perfect sleep.
我们这些人任船在湖面飘流，在十里的荷花丛里酣睡，花的香气扑人，连做梦都感到清香，真是畅快舒服极了。
Water skiing is the sport of aquaplaning over the surface of water on skis attached to the feet, whilst being towed bya boat at speed.
滑水是 运动员脚踏滑水板，由快速前进的汽艇牵引，在水上 滑行的运动。
Water skiing is the sport of aquaplaning over the surface of water on skis attached to the feet, whilst being towed bya boat at speed.
滑水是 运动员脚踏滑水板，由快速前进的汽艇牵引，在水上 滑行的运动。
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