And this would help him to understand why constructing artificial flowers or performing on a tread-mill is work, while rolling ten-pins or climbing Mont Blanc is only amusement.
这个道理使他明白了为什么做假花和蹬车轮就算是工作，而玩十柱戏和爬勃朗峰就算是娱乐。
2
Crane the hydraulic motor ashore for Fabricate ten gudgeon pins.
阀杆断裂了把液压马达吊上岸去修理制作十个活塞销。
3
When you play bowls, the object is to knock down as many of the ten wooden pins as possible.