富强: rich and powerful...
准则: norm, standard, criterion...
平方米: square meter...
观感: one's impressions, observations...
潜艇: submarine...
扩大: to expand, to enlarge, to broaden one's scope...
半天: half of the day, a long time, quite a while, midair...
棺材: coffin...
减: to lower, to decrease, to reduce, to subtract, to diminish...
亏: deficiency, deficit, luckily, it's lucky that..., (often ironically) fancy that......
