必要的;必然的;
必需品;
They always sum up their ( work ) experience whenever it is necessary, so they improve rapidly.
他们总是随时总结经验, 所以工作质量提高很快.
——《现代汉英综合大词典》to go through all the formalities necessary in order to get a gun licence
办理取得持枪执照的全部必要手续
——《牛津高阶英汉双解词典》All the rigging had been examined, and renewed where necessary.
所有索具都进行了检查,并把该更换的部件全部更换一新。
——柯林斯例句For her, books were as necessary to life as bread.
对她来说,书就像面包一样,是生活必需品。
柯林斯例句It is necessary to decrease the amount of coal used.
必须减缩用煤量.
——《现代英汉综合大词典》They were ready to die , if necessary, for their country.
必要时, 他们愿为国捐躯.
——《现代汉英综合大词典》Higher taxes may be a necessary evil.
提高税收可能会很不受欢迎,但却是必要的。
——柯林斯例句He believed that in building socialism it was necessary to make thorough plans on behalf of the state.
他认为搞社会主义,要替国家好好打算盘.
——《现代汉英综合大词典》It is necessary to exercise caution when making commendations.
做推荐时有必要谨慎一些.
——《简明英汉词典》He seems to be making all the arrangements necessary so that he can continue trafficking in drugs when he turns himself in.
他似乎正在做好各种必要安排,以便他自首后还能继续贩毒。
——柯林斯例句Make the necessary arrangements.
做一下必要的安排。
柯林斯例句We will use air power to protect UN peacekeepers if necessary.
必要的话我们会动用空军保护联合国维和人员。
——柯林斯例句This has made it necessary for agriculture and industry to develop very quickly.
这就使得工农业必须飞速发展.
——《简明英汉词典》Hospital admission is not necessary in most cases.
大多数情况下,病人无须住院。
——《牛津高阶英汉双解词典》The ability to do this will be necessary in future flights to distant planets.
将来飞往遥远的行星时,需要这样的能力.
——《用法词典》It's necessary for us to net the currant bushes.
我们有必要用网盖上红醋栗树.
——《简明英汉词典》It's necessary for leading cadres to keep frequent contacts with the masses.
领导应和群众经常见面.
《现代汉英综合大词典》Carbon dioxide is a necessary result of the oxidation of carbon compounds.
碳化合物氧化后必然会产生二氧化碳。
柯林斯例句I do not wish to complicate the task more than is necessary.
我不想使这项任务不必要地复杂化。
——《牛津高阶英汉双解词典》He wasn't good navigator, so it is necessary that the coastline remain in sight as he moved from one harbor to the next.
他不擅航海, 所以当他从一码头驶到另一码头时,得一直沿海岸线航行.
——《简明英汉词典》It is both important and necessary to note this difference.
注意到这个差距是重要的和必要的.
——《简明英汉词典》They are only doing what is necessary to prevent wholesale destruction of vegetation.
他们只是在采取必要措施避免大规模的植被破坏。
——柯林斯例句They has possessed themselves of all the necessary material.
他们已取得了所有必要的材料.
——《简明英汉词典》They are not afraid to tackle the issues or let the sparks fly when necessary.
他们不怕应对这些问题,也不怕必要时来一番激烈的争论。
——柯林斯例句To join these two pieces of metal, it will be necessary to heat them.
要把这两块金属接合起来, 就要将它们加热.
——《简明英汉词典》Is it necessary to send a car for them?
用得着派车去接他们 吗 ?
《现代汉英综合大词典》She found it necessary to reassert her position.
她觉得有必要重申她的立场。
《牛津高阶英汉双解词典》From very early on he believed a military revolution was necessary and he has never deviated from that ideological path.
他一早就认为军事革命是必要的,并且从未背离过这一思想路线。
柯林斯例句And let me assure you I will use whatever force is necessary to restore order.
我向你保证,我将动用一切必要力量来恢复秩序。
柯林斯例句The man could unerringly select the parts that were necessary to his task.
这人能准确无误地挑选出完成他的任务所需要的部分。
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