重點講解：
1. in operation
使用；運作；
eg. Until the rail links are in operation, passengers can only travel through the tunnel by coach.
在鐵路連線開通之前，乘客只能乘坐長途客車穿越隧道f~+Xl;*k8L。
eg. There are three ski lifts in operation.
有3臺滑雪纜車在運行v,3~Os;Pb#q&)mg~6Y。
2. be interested in
感興趣的；有興趣的；關心的；
eg. He's told people that he's interested in going hunting.
他跟大家說，他對外出打獵開始感興趣了6-R.R+|Ed57;z6.gTse。
eg. We're interested in the source of these fictitious rumours.
我們對這些子虛烏有的謠言從何而來很感興趣E;Pr*_HN;lE4f。
3. when it comes to
談到；涉及；
eg. Perspective taking is particularly useful when it comes to your boss.
面對上司的時候，換位思考尤其有效4*61ri6xgFC。
eg. When it comes to expressing himself he is no shrinking violet.
他在表達自己的想法時毫不羞怯VcI)C4*8uU1_。