6 earlier 7 relax; 8 modern 9 really 10 Fortunately 11 serious; 12 harmful
13 meaningful 14 clearly 15 bright 16 wide 这个不是很确定 17 extensive 18 hardly
19 various ; 20 special
6 earlier 7 relax; 8 modern 9 really 10 Fortunately 11 serious; 12 harmful
13 meaningful 14 clearly 15 bright 16 wide 这个不是很确定 17 extensive 18 hardly
19 various ; 20 special