Obviously, it is impractical to perform these tests manually, so some sort of automated test system is required.

显然，用手动的方法进行这些测试是不实际的，所以需要某种类型的自动测试系统。

youdao

Sometimes it is impractical to cache an entire page because portions of the page might need to change on each request.

有时，缓存整个页是不切实际的，因为在每次请求时可能需要更改页的某些部分。

youdao

While it is theoretically possible to generate the required extended deployment descriptors manually, it is impractical to do so.

虽然手工生成所需要的扩展部署描述符从理论上说是可行的，但是这么做是不切实际的。

youdao

It is impractical to sue a million teenagers one at a time, each nameless and hard to trace.

FORBES: Steal This File

In part, that is because it is impractical to distribute a full plane's worth of tablets on wide-body jets with hundreds of passengers, they say.

WSJ: Some Airlines Lend iPads for In-Flight Entertainment Systems

Lepor thinks it is impractical to suggest that a primary care physician who has 15 to 20 minutes to spend with a patient fully explain all the pros and cons of screening in the course of an annual physical.

CNN: Let men decide on prostate screening, cancer society says