首次: first, first time, for the first time...
不知: not to know, unaware, unknowingly, not to admit (defeat, hardships, tiredness etc)...
社会主义: socialism...
养成: to cultivate, to raise, to form (a habit), to acquire...
倒卖: to resell at a profit, to speculate...
对称: symmetry, symmetrical...
根治: to bring under permanent control, to effect a radical cure...
