A good marriage takes work and shouldn't be based on feelings alone.
一段好的婚姻要用心去經(jīng)營(yíng),而不是僅僅建立在感情的基礎(chǔ)上。
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.
我們必須把很長(zhǎng)的鉆桿一節(jié)節(jié)地鉆入地下,然后再?gòu)牡叵吕鰜?lái)。鉆桿頂部安裝的發(fā)動(dòng)機(jī)帶動(dòng)鉆桿旋轉(zhuǎn),它的底部裝有鉆頭。