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- A weaker downtrend is necessary before any new uptrend can develop. 在任何新的上升趋势形成之前下降趋势减弱是必要的。
- Some forethought and preparation is necessary before you embark on the project. 你着手进行这个项目之前必须有所考虑，有所准备。
- To aid clearing syphon again in 2 months an again if necessary before bottling. 2个月内再次清洁虹吸管，如果有必要，在装瓶之前重复这一操作。
- Other scientists feel that more research is necessary before any definite conclusions are reached. 其他一些科学家认为，需要进行更多的研究才能得出确切的结论。
- A short circuiting operator will evaluate only as many expressions as necessary before returning a correct value. 短路运算符仅计算返回正确值所必需的表达式。
- Your room and wait while you have your shower and do whatever else you feel necessary before we leave. 我陪你到你房间,你洗个澡,看看在我们离开前还需要做些什么,我等着你。
- I also find that a conscious understanding of my lessons is sometimes necessary before I am able to release the karma. 我也发现，在我能够解除业力之前，对我的课程得到有意识理解有时候是必不可少的。
- A basic understanding of HRCT technique, protocols, and artifacts is necessary before beginning. 开始之前必须的HRCT的技术、定则、伪影作基本的了解。
- To guarantee the preloading project safety and reasonable, stability evaluation is necessary before each stage loading. 在填筑过程中，必须验算每级荷载下地基的稳定性，以保证淤泥路基预压工程安全、合理。
- As a matter of fact, I've never been there before. 事实上我从未到过那儿。
- We started early in order to arrive before dark. 为了在天黑前到达，我们很早就动身了。
- However,scientists warn that much more work is necessary before organs from copies of the pigs could be transplanted into humans. 但是，科学家们提醒说，在由克隆猪所提供的器官能够顺利植入人体以前，还有很多必需的工作要做。
- This simple means that one takes each piece of the garment and performs the sewing operations necessary before joining it to the adjacent section. 简单地说,就是在将相邻的两片衣片缝合前,操作者要对每片衣片做必要的缝纫操作。
- However, scientists warn that much more work is necessary before organs from copies of the pigs could be transplanted into humans. 但是,科学家们提醒说,在由克隆猪所提供的器官能够顺利植入人体以前,还有很多必需的工作要做。
- Arthroscopic assessment can be helpful, but there are no data to indicate whether it is necessary before patellofemoral arthroplasty. 关节镜检评估可能有用，但是没有数据表明髌骨股骨关节成形术前是否有必要。
- Introductions to the development of Internet and something about Internet society are necessary before the study of netspeak. 在研究网络语言之前,首先要对网络社会的形成发展进行了解。
- Sacrifice was necessary before the close relationship with God was possible, since mankind’s sinful condition forfeits the favor of God. 在百姓能与上帝有更亲密的关系之前，他们必须先献祭，因为人的罪已使他丧失了上帝的欢心。
- Conclusions Taking the bacterial culture and sensitive tests of conjunctival sac of PDR patients were necessary before surgery. 培养出的革兰氏阳性菌对万古霉素、利福平、庆大霉素敏感，对环丙沙星、氧氟沙星耐药性有所增加；
- The clerk marked up his daybook before going home. 办事员在回家前记好当天的日记帐。
- Let's dunk in the pool before dinner. 我们饭前到池塘里泡一会儿。
