Diphead
[采礦]下山(沿煤層方向的傾斜巷道)
??? 情景例句
He has a great enthusiasm for personal computers.
他熱衷于個人電腦。
It seems he's afraid.
看起來他好像很害怕。
By 1820 the population of New York had grown to about 125,000, making it the largest city in the USA.
到1820年，紐約市的人口增長到12。5萬人左右，使它成了當時美國最大的城市。