例句與造句

1. The drilling work of the gas field was started at a cost of Tk . 2 crore at the instruction of the then Minister Naziur Rahman, rig-foundation, barge landing jetty, earth levelling, 20 units of residential quarters for the officials and workers, connecting roads and four godowns were constructed then for the smooth drilling of the gas field at Shahbazpur.
2. It's difficult to find smooth drilling in a sentence. 用smooth drilling造句挺難的