- 重点词汇
- 为什么
why; wherefore; how; for what reason; how come; why is it that; how is it that; the reason why; what for
- 数学
mathematics; math; maths; mathematical
- 不通
be obstructed; be blocked; be impassable; be out of order; fail to understand; not communicate; not make sense; impassable; blocked; obstructed; incoherent; illogical; ignorant; uncomprehending