不是必要的

While the inclination to procrastinate is common , one must fully consider the detrim ental impact of unnecessary delays .

虽然拖延的倾向是普遍的，但是人们应该充分考虑到不必要的延误造成的有害影响。

Grouts other than epoxy may require alternative surface preparation .full bond-strength of epoxy is not generally necessary.

非环氧砂浆可能有另外要求的表面准备。环氧砂浆的完全结合强度通常是不必要的。

Laine asks, citing potential hazards including unnecessary cost increases, inducing bleeding in nonbleeding lesions, and even perforation.

他指出可能的不利指出包括：不必要的费用增加、诱导无出血病的出血，甚至是穿孔。

The dehydration and transformation into suanite of decomposed of szaibelyite at about 700℃ is the main reason of ludwigite weight loss, It was found by XRD that paigeite and magnoferrite are the most stable component without phase tromsformation during oxidizing roasting.

硼镁石在700℃左右分解脱掉结构水形成遂安石，硼镁石的分解是造成硼铁矿大量失重的主要原因。通过XRD分析可知矿石中的镁铁矿相、硼铁矿相为最稳定相，在硼铁矿原矿焙烧过程中不发生相变。为硼铁矿烧结-冶炼工艺提供了必要的理论依据。

One reason is that some lees well-known nutrients and some nonnutrient food components could be important to health;some foods may be better sources of these than others .another reason is that monotonous diet may deliver large amounts of toxins or contaminants .each such undesirable item in a food is diluted by all the other foods eaten again.

原因有以下几点：其一是有的鲜为人知的营养素或非营养素成份实际上对健康及其重要。一些食物可能比其他食品含有相对较多的此类物质。另一个原因是单一的膳食可能含有大量的毒素或者污染物质。每一种食物中含有的不必要的成分可以被搭配的其他食品稀释，如果这种食品要几天后才再吃，那就会被进一步稀释。

Results Eighteen cases were misdiagnosed as appendicitis and periappendicular abcess and two casesas intestinal obstruction.

右半结肠癌早期症状不典型，术详细的病史及检查，术中必要的探查是避免误诊的有效措施。

Results eighteen cases were misdiagnosed as appendicitis and periappendicular abcess and two casesas intestinal obstruction.conclusion the clinical symptoms of early right hemicolon carcinoma are not typical,correct diagnosis mainly depends on abundant resources from disease history, physical and laboratory examinations and laparotomy is needed when necessary.

结果 126例右半结肠癌中，18例入院时误诊为阑尾炎及阑尾周围脓肿；2例误诊为阑尾周围脓肿并肠梗阻。结论右半结肠癌早期症状不典型，术前详细的病史及检查，术中必要的探查是避免误诊的有效措施。

Conclusions\ Enhancing ICU administration in every aspect and infection surveillance, strict aseptic technique and sterilization-Isolation technique, using semisupine position, reducing unnecessary suctioning and nebulization. Avoiding the risk factors which associated with pulmonary infection was the effective method to reduce the pulmonary infection.

加强ICU全方位管理和感染监测，严格无菌技术和消毒隔离，尽量采用半卧位，减少不必要的吸痰和雾化吸入，避免肺部感染的危险因素是降低肺部感染行之有效的措施

A Brief of Alexander VII, dated November, 1657, confirming the decision of Sixtus IV, in 1475, that abstinence from flesh meat was not essential to the rule, did not quiet their scruples.

简短的亚历山大第七月11月， 1657年，并确认将此项决定Sixtus的四，在1475年，即禁欲，从肉的肉是没有必要的规则，不安静，他们顾忌。

The size, thickness, weight of our yoga mat cushions is made exquisitely; the skidproof quality, elasticity are exquisite to avoid harm in yoga mat practicing.

1：馆内所有的瑜珈垫yoga mat垫的大小，厚度，轻重，都是经过精心打造；防滑性，弹性，均衡性，选用上等，优质，避免了一般垫在练习过程中不必要的伤害。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。