trial run

英 [ˌtraɪəl ˈrʌn]

美 [ˌtraɪəl ˈrʌn]

n. (对新事物的)初步试验，试行

牛津词典

noun

（对新事物的）初步试验，试行
a test of how well sth new works, so that you can see if any changes are necessary

初步试验;试行
Atrial runis a first attempt at doing something to make sure you can do it properly.

noun

trying something to find out about it
1. a sample for ten days free trial
2. a trial of progesterone failed to relieve the pain
Synonym:trialtesttryout

Sometime in2020 we can see a trial run of a high speed railway by which time the whole of China will be covered by bullet trains.
在2020年的某个时候，我们能看到高速火车的试跑，那个时候，整个中国已经遍布高速火车了。
The live stream could be a sort of trial run for any new streaming technology the company will announce.
直播可能是某种该公司想要发布的新的媒体播放技术的试用。
The programme was given a trial run to gauge viewers 'reactions.
该节目进行了试演以了解观众的反应。
Does the Design Verification Plan include retest requirements for design, material, or manufacturing process changes that occur prior to the production trial run?
设计验证计划包括关于设计、材料或在产品试运行之前发生的生产工序变化的复测要求吗？
We encountered one small problem during the trial run.
我们在试运行中，遇到了一个小问题。
He gave the machine a trial run.
他试了一下这部机器。
The machine failed on its trial run.
但这部机器的试车失败了。
Have the process instructions been verified during extended trial run ( s) to ensure they can be performed?
工序说明在延长了的试运行期间是否已经得到验证以此来证明可行？
We planned a trial run there with the camels and gear.
我们打算带骆驼和装备去那里作一次试验性旅行。
The result of the trial run is too bad.
试车的结果太糟糕了。