useful: adj. 1.有用的,有益的,有效的,有幫助的。 2.〔 ...steam consumption: (蒸)汽(消)耗量。 consumption of steam: 汽耗; 水蒸汽消耗no steam consumption: 空負荷汽耗no-steam consumption: 空負荷汽耗useful steam o umption: 有效耗汽量useful steam onsumption: 有效耗汽量actual steam consumption: 實際汽耗guaranteed steam consumption: 保證汽耗specific steam consumption: 單位耗汽量; 耗汽率; 汽耗率specific steam consumption test: 單位汽耗試驗; 耗汽率試驗steam consumption meter: 蒸汽消耗計steam consumption per hour: 每小時汽耗steam consumption rate: 汽耗率steam-consumption meter: 蒸汽耗量計theoretical steam consumption: 蒸汽理論消耗量be useful: 有用場be useful for: 對…有作用例如be useful to: 對有益; 對…有用useful: adj. 1.有用的,有益的,有效的,有幫助的。 2.〔俚語〕值得稱贊的,精通…的 (at)。 make oneself generally useful 事事有用,事事幫得來忙 (He must make himself generally useful. 他可事事都干得來)。 a pretty useful performance 相當精采的演出。 His wife is very useful at cooking. 他的妻子很會做菜。 adv. -ly ,-ness n. consumption: n. 1.消費(量);消盡,消耗,滅絕。 2.【醫(yī)學】結(jié)核?。话A病,肺癆 (=pulmonary consumption)。 The speech was meant for foreign [home] consumption. 那篇講話是讓國外[本國]人聽的。 consumption goods 消費品。 consumption of the bowels 腸結(jié)核。 consumption tax [duty] 消費稅。 by steam: 坐輪船no steam: 不可用蒸汽steam: n. 1.蒸汽,水蒸氣,水氣,霧,蒸氣壓力。 2.〔口語〕精神,精力,氣力;怒氣。 3.輪船,乘輪船旅行。 dry steam干蒸汽。 high steam 高壓汽。 a steam limit curve 汽液界線。 In our plant, technical innovation gets up steam. 我們廠的技術(shù)革新的勁頭增加了。 Now, Tom, let the steam off and come to an agreement. 好了,湯姆,吐完了怨氣達成協(xié)議吧。 Playing football is one of the ways of letting off youthful steam. 踢足球是青年人散發(fā)精力的方法之一。 at full steam 放足蒸氣;開足馬力,盡力。 by steam 坐輪船。 get up steam 冒水蒸氣;振作精神,拿出干勁;憤怒。 have steam on 冒著水蒸氣。 let off steam 發(fā)泄多余的精力;發(fā)牢騷。 put on steam 拿出精神。 run out of steam〔口語〕泄氣,失去勢頭。 under its [her] own steam(指船)依靠本身的蒸汽力。 under steam 被汽力推動著,在航行中;拿出精神。 work off steam 拿出精力[干勁]工作;發(fā)泄某種感情。 vi. 1.蒸發(fā),凝結(jié)蒸汽;冒水汽;出汗;被水汽弄模糊。 2.利用汽力開動[行駛,航行]。 3.〔口語〕大大進步[進展]。 4.〔口語〕發(fā)脾氣。 5.〔口語〕〔英俚〕(青少年等在公共場所)結(jié)幫搶劫。 vt. 1.蒸,煮;蒸軟(木材)。 2.使蒸發(fā);散發(fā)。 3.用蒸汽力開動。 steam the meat 蒸肉。 a steamed bun 饅頭。 steam a ship through the strait 把輪船開進海峽。 The train steamed into the station. 火車冒著蒸汽開進車站。 That would make him steam again. 那會使得他又發(fā)火了。 steam along [ahead] 拚命開。 steam in: 蒸汽人口