Certainly, no homework should be assigned that students cannot complete on their own or that they cannot do without expensive equipment.
当然，不应该给学生布置无法独立完成或没有昂贵设备就无法完成的作业。
Quite plainly, the Earth cannot do without its ocean.
很显然，地球没有海洋不能生存。
The theory I bring forward is that he cannot do without the profane.
我提出的理论则是，人不能没有凡俗。
Therefore, we should realize that in learning English we cannot do without a dictionary.
例︰所以，我们应该了解学英文不能没有字典。
But regardless of its higher price, the humble garlic clove remains a commodity that Chinese customers simply cannot do without.
但是，无论它的价格有多高，着普通的大蒜瓣依然是中国消费者离不开的商品。
鱼没有水是不能活的。
But Britishers cannot do without it.
但英国人却离不开它。
The manager cannot do without a secretary.
经理没有秘书不行。
The Net has become something we cannot do without.
我们已经离不开网络了。
Human beings cannot do without something to look forward to.
人，是绝不能没有盼头的。
It's just like a telephone or fax number which we cannot do without.
这就像电话或者传真号码，我们不能没有。
The shaping of moral character cannot do without the practice of moral education.
道德品质、道德人格的形成离不开道德实践。
They are the ones that we cannot do without because it is they who make life interesting.
我们不能没有他们，因为他们使我们的人生充满乐趣。
Furthermore, the use of agricultural machinery for large scale single cropping cannot do without oil.
另外，大规模单一化种植对机械的要求也间接要求石油的供应。
I found that I a moment also cannot do without you, really want to hold a cup of wine, drunk for you!
⊙、我发现我一刻也离不开你了，真想，举起一杯红酒，为你而醉！
All sorts of function treatment to the accounting information system cannot do without mathematical algorithm.
会计信息系统中的各种功能处理离不开数学算法。
The modem electronic equipments cannot do without the reliable power supply, and have more and more high expectations for it.
现代电子设备离不开可靠的电源，且对电源的要求越来越高。
Now, many digital logic systems cannot do without computer aided design CAD, especially the VHDL Hardware Description Language.
数字逻辑系统的设计离不开计算机辅助设计CAD工具的帮助，尤其是VHDL硬件描述语言。
The man who thinks he can do without the world is indeed mistaken; but the man who thinks the world cannot do without him is mistaken even worse.
认为自己可以离了整个世界人确实是错了，但是认为这个世界没法离了他的人错的更深。
Only the lucky ones with experience may be lucky to find their own way out of negative situations, just as others cannot do without the assistance from close friends.
只有一些有经验的幸运儿能够找到摆脱逆境的办法，而其他的人没有来自至友的帮助则很难做到。
Secondly, we should thank nature. Nature is the basis for all living. The life activity of human cannot do without it, therefore, we should be thankful tonature.
大自然是万物赖以生存的基础。人的生命活动一时一刻也离不开它，我们人类的衣食住行等都是从大自然中获得的，因此，我们应该感恩大自然。
In a manner of speaking, international competition is brand competition. To participate in the competition Chinese businesses cannot do without their branding strategies.
当前国际经济市场的竞争，从一定意义上讲是名牌之间的较量，我国企业要参与市场竞争，就要实施名牌战略。
The construction and management of a lab cannot do without human resources with higher abilities, advanced skills, good attitudes, to be ready to devote and to meet challenge.
实验室建设与管理工作离不开一支高素质、善管理、懂技术、乐于奉献、勇于创新的实验技术队伍。
The research in the issuing scope of national debts cannot do without mathematics thinking modes and mathematics methods, such as qualitative analysis and quantitative analysis.
国债发行规模的研究离不开数学思维方式和数学方法，如定性分析与定量分析；
The research in the issuing scope of national debts cannot do without mathematics thinking modes and mathematics methods, such as qualitative analysis and quantitative analysis.
国债发行规模的研究离不开数学思维方式和数学方法，如定性分析与定量分析；
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