根据意思写词语。0e.l.S2u2[*~'E3J9C-Z'A4[+[
1.集中精神,做某一件事。2Z;G.w;[6`2]/Z,e1T(L0l5r0e.l.S2u2[*~'E3J9C-Z'A4[+[
2.形容斗争十分艰苦,超出寻常。(J8?0T6b8w6B5y5{2R*E8D0e.l.S2u2[*~'E3J9C-Z'A4[+[