Why does the Greenland Paddle work?
为什麽使用格陵兰桨是可行的？
Using four paddle-like limbs to propel its bulky body through the water, the pliosaur made easy work of passing prey such as dolphin-like ichthyosaurs.
上龙用四根桨状的四肢推动它庞大的身体在水里游来游去，轻而易举地就能掠食形似海豚的鱼龙。
So, it's a trivial matter, by looking at what is the weight and how far does it drop, to say OK, how much work is done by the paddle wheel.
好，让我们看看重物的质量,以及它下落的距离，就知道桨轮做了多少功。
But I will be going into the office as usual and continuing to work hard and paddle through life as usual.
但是我会继续去办公室工作，向往常一样继续我的生活。
Go boating – The idea of sailing on a first date seems like a recipe for disaster but something milder, like canoeing, row boating, or taking a paddle boat out on a sunny afternoon would work well.
泛舟之乐——如果初次约会就扬帆远航似乎的确像是一个灾难片的前兆，不过我们可以换个温和一些的选择，譬如在一个阳光的午后划独木舟，摇浆的小船，或是脚踏船都是不错的。
Work was done in turning the paddle wheel against the resistance of the water.
转动搅拌轮，克服水的阻力做功。
Work was done in turning the paddle wheel against the resistance of the water.
转动搅拌轮，克服水的阻力做功。
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