The line of duty
履行職責, 盡職
?? 詞語組成解析
the
[e?]
art. 指已提到的人（物）;指說話人與聽者已知的人（物）;用于獨一無二的事物前;與形容詞最高級和序數詞連用;
line
[la?n]
n. 線條;排;行列;界線;
vt. 排隊;用線標出;沿…排列成行;給…安襯里;
vi. 形成一層;排隊;擊出平直球;
of
[?v]
prep. 關于;屬于…的;由…制成;
aux. 助動詞 [非標準用語、方言] =have [主用于虛擬語氣];
??? 情景例句
We can have somebody come by, but it won't be right away.
我們可以派人去，但現在不行。
I wish it would stay this way for the weekend.
但愿整個周末都能保持這樣的好天氣。
They spent a full and very enjoyable morning together, and Fred discovered that he had a gift for making a visit interesting and lively.
他們一起度過了一個充實而又非常愉快的早上，弗雷德發現自己具有導游的才能，能使參觀活動變得趣味盎然。