need n. 1.必要,需要。 2.缺乏,不足。 3.需求;需用的东西。 4.危急的时候,一旦有事的时候。 5.贫穷。 There is no need for [of] hurrying =There is no need to hurry. 不用着急。 There is a great need of money. 急需要钱。 A friend in need is a friend indeed. 患难朋友才是真朋友。 He is in great need. 他穷得很。 at (one's) need 在紧急时 (be good at need 在急需的时候有用)。 be in need of 需要。 do one's needs 〔俚语〕解大[小]便,解溲,撒尿。 had need (to) (do) 必须… (I have need to go to town. 我必须进城)。 have no need of 不需要。 If need be [were] 如果必要的话。 in case [time] of need 在紧急的时候,万一有事时。 stand in need of 需要。 vt. 要,需要,必须,有…的必要。 This house needs repair. 这个房子要修理了。 He needs to go. 他必须去。 Does he need to know? 有告诉他的必要吗? vi. 1.生活贫困。 2.〔古语〕需要〔主要用于无人称句〕。 It needs not. 不需要。 more than needs 超过需要。 There needs no apology. 用不着辩解。 Give to those that need. 救济贫困者。 不得不,必须。 1.★在否定句或疑问句中,第三人称现在时单数也不加 s; 过去时用 had to 来代替,将来时用 will (或 shall) have to 来代替。 need not (〔口语〕 needn't) 相当于 must 的否定形式。 如: He need not come. 他不必来。 N- she go 她必须去吗? It need hardly be said that …简直用不着说。 2.She need not go. 这句话,口语常说作 She doesn't need [have] to go.
These ability need self - determined and innovative learning . when put this in practice , the result is too dependent on teacher ' s gift , experience and enthusiasm . this can not receive stable and fine result and popularization extensively 实践中,进行这种学习的教学过分的依赖于教师的个人天赋、经验的积累和敬业精神,而达不到大范围内的质量稳定性和普遍性。
For example , in the most parts of satellite fault detecting and diagnosis like the acquisition of symptom information , the establishing and reduction of decision system etc . the proper inference method and error - fusion ability need to be used 例如在卫星故障检测和诊断的许多方面? ?症状信息获取、决策信息系统生成和约简等方面? ?都不可避免地要运用合情推理和容错能力。
But md has had demonstrated no commercial success . because the properties of md membrane , such as cost , flux , strength , hydrophobic and anti - dust ability need to be improved . based on such problems , quantity of research work has been done 虽然膜蒸馏法处理海水苦咸水具有诸多的优点,但目前为止仍未取得商业上的成功,其重要原因在于蒸馏膜的性能,膜的成本、蒸馏通量、强度、疏水性、耐老化性、抗污染性等还有待进一步的改善和提高。