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視頻對白：
That people who dug this well did it completely by hand. God knows how long it take them.
當時挖這口井的人靠的完全是雙手。天知道花了多長時間才完工。
今天要學習的詞組為：by hand
意為“用手的，手工的 ”。
例句：
1. You can pump up the tyres by hand or with this special machine.
這可以用手或用這個特殊的機器給車胎打氣。
2.Farmers used to thrash their wheat by hand.
農民過去用手打麥脫粒。
