重點講解：
1. a space of
一段（時間）；期間；
eg. They've come a long way in a short space of time.
他們在很短的時間之內就大老遠地趕了過來W4^@Lr5ne^Z=kCrQ#。
eg. A space of a minute or two has elapsed before he comes up with her.
一兩分鐘以后，他才趕上她Pr#5%JVIR&]^JO)vxBWC。
2. a couple of
兩個；幾個；
eg. He patched up a couple of old tires.
他補了幾條舊車胎[oE^J;df~0%9_(_CJB。
eg. She brought along a couple of sulky looking kids.
她帶來幾個臉色慍怒的孩子wt=|;%rvl4*。
3. no problem
沒關系；不客氣；
eg. Thanks for helping me move into my new apartment. No problem. Call on me anytime.
謝謝你幫我搬家到新的公寓+bFZUC_[i3。不用客氣，你隨時都可以找我q-Jjw0UGG4BC2m#wH。
eg. No problem . My pleasure. A nice day and enjoy you stay here!
不客氣，樂意效勞kI~w4G7Gz;ZBS7wip#s。祝您今天愉快，在這兒過得開心！