It is not hard to operate automatic machines.

操作自动机器并不难。

youdao

David: Wow, it's fantastic. I guess it must be very hard to operate machining centers.

大卫：哇，太神奇了。我猜加工中心肯定很难操作。

youdao

The common practice to change from the pushing operation to towing, or vice versa, is both time - consuming and power - wasting, and it is hard to operate as well.

一般拖轮由顶推作业改为艉拖作业或反之，不仅费时费工，而且操作不便。

youdao

You also are on your own when navigating hearing-aid providers, where you risk paying too much for hearing aids that make your life miserable because they don't fit, are hard to operate and overamplify background noises.

WSJ: Conquering Retirement: Hearing-Aid Shopping Tips

Centrifuge machines are hard to operate.

ECONOMIST: Something new to worry about

Recent experience in Afghanistan, for example, has shown how hard it is to operate the basic elements of even a primitive economy in a country which has been torn apart by war.

ECONOMIST: Helping Iraq, and the world, to recover | The