thoughtless
adj
1 not aware of the possible effects or consequences of one's actions, etc; careless 考虑不周的; 粗心大意的.
2 inconsiderate of others; selfish 不顾及他人的; 自私的.
The wall behind looks a bit grey and dull. What can we do to make it look less ugly?
后面那堵墙看起来有点暗。我们能不能让它漂亮点?
Many offices use answering machines to give information.
许多办公室使用留言机来提供信息。
I am sorry that you have a disagreement with your father. Personally, I think it is important to follow your interests and your abilities, and it sounds as though you have plenty of both of these already.