Because of this, we kept looking back, wondering if we were leaving a trail of oil and petrol behind us.
因此，我們不時地掉過頭，懷疑車后是否留下了機油和汽油的痕跡。
新概念英語第三冊
Lesson 39 Nothing to worry about
?? 句中詞匯解析
從本句中提取的重要詞匯
conj. 因為;
?? cause, cuse 表原因,目的;司法程序,訴訟
"He was arrested because of his political affiliation."
他因所屬政黨的關系而被捕。
近義：since, whereas, for, forasmuchas
vt. 跟蹤，追蹤;拖曳：讓…拖或飄揚在后面;拖沓而行;跟在…后面;
vi. （在比賽等中）輸;（尤指跟在他人后面）疲憊地走;（在比賽或其他競賽中）落后;蔓生;
n. 足跡;臭跡;小徑;一縷;
?? trail(draw)→拖；拉；追蹤；尾隨；蹤跡；小徑
"The wagon left a trail of dust."
馬車后揚起了一縷煙塵。
近義：heel, hound, shadow, sleuth, spoor, trace
prep. （表示位置）在…的后面;支持;（表示順序）在身后;（表示比較）落后于;
adv. 在后面;向后;在后面較遠處;（落）在后面;
n. 〈口〉屁股;
?? be構成一些介詞+hind藏在后面→在…后面
"The crowd had to stand behind barriers."
人群只好站在障礙物后面。
近義：back, posterior, rear, rearward, lagging, late
反義：quick, rapid, accelerated
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背書于;下賭注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
"Water allotments to farmers were cut back in the drought."
在干旱時期配給農民的水量減少。
近義：second, support, endorse, illustrate, document, backtrack
反義：impel, inch, save, loop, sheer, slew