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。
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。
When you play bowls, the object is to knock down as many of the ten wooden pins as possible.
玩滚木球游戏时，目标是尽量多地击倒十个木瓶。
When you play bowls, the object is to knock down as many of the ten wooden pins as possible.
玩滚木球游戏时，目标是尽量多地击倒十个木瓶。
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