重点讲解：
1. come to mind 突然想起；(想法)一下子冒出来；
When discussing influential modern artists, three names immediately come to mind.
在讨论现代有影响的艺术家时，一下子有三个名字出现在脑海中UI=(cU_1glyVZ.tVTdO。
2. at best 充其量；顶多；至多；
We can only finish half of it this afternoon at best.
今天下午我们充其量只能完成一半DXL277bE6l1_~eK。
3. on one's own 单独地；独自地；
Now, I hadn't told him these details, so he must have done some research on his own.
你看，我没有告诉他这些细节，因此他一定是自己作了一些调查lt0&~nY3GyIxSe。
4. to the extent 到……程度；
We may not be able to do it to the extent that we would like.
我们也许无法把这件事做到我们希望的程度2b+~p9a9R41Dd[DQd。