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- I made many preparatory experiments in secret, and have been satisfied with them. 我悄悄地做了几次试验，试验的结果，我十分满意。
- The four preparatory experiments tested the typical location-based and object-based ior on different SOAs,at the same time got the measure of ior . 预备实验验证经典的基于位置和基于客体的IOR，并获取IOR的量；
- They finished the preparatory training. 他们完成了预备训练。
- What are your preparatory measures? 你的初步措施是什么？
- Preparatory Experiment on Feasibility of Applying Rice Hull in Rice Cultivation in Frigid Region 寒地稻糠稻作可行性预备试验
- Her son is studying in a preparatory school. 她儿子正在一所大学预备学校学习。
- I did preparatory exercises before the race. 我在赛跑前做了准备运动。
- There is much preparatory work for us to do. 我们有许多准备工作要做。
- It took me just on two hours to do this experiment. 做这个实验大约花了两个小时。
- A preparatory action or measure. 准备预防性行动或措施
- We are doing a chemical experiment. 我们正在做化学实验。
- The results of the experiment varied wildly. 实验结果差异很大。
- Some scientists experiment on animals. 有些科学家用动物做试验。
- I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。
- We will do a Chemistry experiment this Friday. 这个周五我们要做化学试验。
- May a good result wait upon your experiment. 祝你的实验取得满意的成果。
- The temperature was a variable in the experiment. 在该实验中温度是个变量。
- You should pack it up preparatory to sending it by post. 在邮寄之前你应该把它包好。
- We need sublimate water for our experiment. 我们的实验需要纯净化的水。
- We did some singularly boring experiment. 我们做了一些非常乏味的试验。
