Work can be a double-edged sword, in that it can stimulate brain activity, but at the same time long working hours can cause fatigue and stress, which potentially damage cognitive functions.

工作是一把双刃剑，既能够刺激大脑活动，同时过长的工作时间也会导致疲劳和压力，并有可能损害认知功能。

youdao

Double transducer control, flexible bag length cutting, operator needn't to adjust the unloading working, time and film savable.

双变频器控制，袋长即设即切，无需调节空走，一步到位，省时省膜。

youdao

My own estimate is that there are about 10, 000 white hat security researchers working full time to counter malware (100 vendors X 50 average and double that for independents.) I am still working on an estimate of the number arrayed on the other side of this battle ground.

FORBES: Battleground Cyberspace: Hackers vs. White Hats