Trace handler
[計] 跟蹤處理程序
?? 詞語組成解析
trace
[tres]
vt. 跟蹤，追蹤;追溯，探索;探索;查找;
vi. 沿著一小徑或道路前進;可以追溯的;
n. 痕跡，蹤跡;微量，極少量;[植]（脈）跡;痕跡;
trace(draw)→回溯
handler
['h?ndl?]
n. 處理者，管理者;（動物）馴化者;[自]（信息）處理機;拳擊教練;
??? 情景例句
He didn't want to borrow any money.
他不想借錢。
Is it too late?
來得及嗎？
As far as policy is concerned, I have to say something.
談到政策，我得說幾句。