"倒計時"一般用countdown，如“距離世界博覽會倒計時100天的”可以表達為the 100-day countdown of World Expo。
countdown
英 [ˈkaʊntdaʊn] 美 [ˈkaʊntˌdaʊn]
n. 倒數讀秒，倒計時;大事臨近的時期;準備過程，準備工作
例句：
1、The countdown has begun for the launch later today of the American space shuttle
美國太空梭的發射已於今天晚些時候開始進入倒計時。
2、There were three more things to do before countdown.
開始倒計時之前還有3件事要做。
3、The countdown to the Notting Hill Carnival is in its final hours.
諾丁山狂歡節已經進入了最後幾個小時的倒計時。
4、The countdown to Christmas has started.
聖誕節倒計時開始了。
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5、I can slow down the countdown.
我可以讓倒數慢下來。
"剩餘"的英文有surplus; residue; remainder; overplus。
surplus
英 [ˈsɜ:pləs] 美 [ˈsɜ:rpləs]
adj. 過剩的;多餘的
n. 盈餘;順差;剩餘額;公積金。
1、Germany suffers from a surplus of teachers.
德國遭遇了教師過剩的問題。
2、Few people have large sums of surplus cash
幾乎沒人手頭很富裕。
3、Japan's annual trade surplus is in the region of 100 billion dollars.
日本每年的貿易順差額在1,000億美元左右。
4、I sell my surplus birds to a local pet shop
我把多餘的鳥賣給當地的寵物商店。
5、The houses are being sold because they are surplus to requirements.
這些因超出需求而閒置著的房子正在出售。
residue
英 [ˈrezɪdju:] 美 [ˈrezɪdu:]
n. 殘餘，殘渣;餘渣，殘餘物;[法]剩餘財產;[林]廢材
1、Always using the same shampoo means that a residue can build up on the hair.
總是用同一種洗髮水就意味著某種殘留物會在頭髮上越積越多。
2、A residue can build up on the hair shaft, leaving the hair limp and dull looking.
殘留物會積聚在頭髮上，使頭髮看起來軟塌塌的，而且毫無光澤。
3、This paper studied the fast determination method of SO2 residue in edible fungus and its affected factors.
對食用菌中SO2殘留的快速測定方法及各種影響因素進行了研究。
4、The effectiveness of agricultural disposal and utilization of fermentation residue was studied in plot experiment.
透過田間小區實驗，對生物發酵殘渣農業處理和利用的效果進行了研究。
5、Suspension bed hydrocracking technology and water soluble catalyst were used for upgrading of atmospheric residue from Dagang oil field.
採用懸浮床加氫技術和水溶性分散催化劑對大港常壓渣油進行了輕質化和改質研究。
"倒計時"一般用countdown，如“距離世界博覽會倒計時100天的”可以表達為the 100-day countdown of World Expo。
countdown
英 [ˈkaʊntdaʊn] 美 [ˈkaʊntˌdaʊn]
n. 倒數讀秒，倒計時;大事臨近的時期;準備過程，準備工作
例句：
1、The countdown has begun for the launch later today of the American space shuttle
美國太空梭的發射已於今天晚些時候開始進入倒計時。
2、There were three more things to do before countdown.
開始倒計時之前還有3件事要做。
3、The countdown to the Notting Hill Carnival is in its final hours.
諾丁山狂歡節已經進入了最後幾個小時的倒計時。
4、The countdown to Christmas has started.
聖誕節倒計時開始了。
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5、I can slow down the countdown.
我可以讓倒數慢下來。
"剩餘"的英文有surplus; residue; remainder; overplus。
surplus
英 [ˈsɜ:pləs] 美 [ˈsɜ:rpləs]
adj. 過剩的;多餘的
n. 盈餘;順差;剩餘額;公積金。
例句：
1、Germany suffers from a surplus of teachers.
德國遭遇了教師過剩的問題。
2、Few people have large sums of surplus cash
幾乎沒人手頭很富裕。
3、Japan's annual trade surplus is in the region of 100 billion dollars.
日本每年的貿易順差額在1,000億美元左右。
4、I sell my surplus birds to a local pet shop
我把多餘的鳥賣給當地的寵物商店。
5、The houses are being sold because they are surplus to requirements.
這些因超出需求而閒置著的房子正在出售。
residue
英 [ˈrezɪdju:] 美 [ˈrezɪdu:]
n. 殘餘，殘渣;餘渣，殘餘物;[法]剩餘財產;[林]廢材
例句：
1、Always using the same shampoo means that a residue can build up on the hair.
總是用同一種洗髮水就意味著某種殘留物會在頭髮上越積越多。
2、A residue can build up on the hair shaft, leaving the hair limp and dull looking.
殘留物會積聚在頭髮上，使頭髮看起來軟塌塌的，而且毫無光澤。
3、This paper studied the fast determination method of SO2 residue in edible fungus and its affected factors.
對食用菌中SO2殘留的快速測定方法及各種影響因素進行了研究。
4、The effectiveness of agricultural disposal and utilization of fermentation residue was studied in plot experiment.
透過田間小區實驗，對生物發酵殘渣農業處理和利用的效果進行了研究。
5、Suspension bed hydrocracking technology and water soluble catalyst were used for upgrading of atmospheric residue from Dagang oil field.
採用懸浮床加氫技術和水溶性分散催化劑對大港常壓渣油進行了輕質化和改質研究。