重点讲解:
1. at hand (空间或时间上)接近的,不远的;
When he writes, he always keeps a dictionary at hand.
他写作时手边总备有一本词典 。
2. be good at 擅长的;精通的;能干的;
He is good at arithmetic.
他擅长算术 。
3. print out 打印出(计算机文件);
I shall just print this out and put it in the post.
我只需把它打印出来,然后投进邮筒 。
4. sum up 总结;概括;
I will sum up all we have said.
我会把我们所说的做个总结 。
v. 伸展,展开,传播,散布,铺开,涂撒
n.