Heating the artificial muscles with an electric current causes them to compress the soft center of the pump, forcing urine through an outlet that pumps it up to the height of the robot's fuel cells.

加热该人造肌肉与电流使它们压缩泵的软中心，迫使尿通过泵它的出口到机器人的燃料电池的高度。

youdao

“Hard on the outside, with a soft chewy center, ” is the way many veteran computer security researchers think of such strategies.

许多资深的计算机安全研究人员认为这种战略是“外硬内软”。

youdao

Source: U.S. Food and Drug Administration, National Soft Drink Association, Center for Science in the Public Interest.

资料来源：美国食品和药物管理局，国家软饮料协会，公众利益科学中心。

youdao

Yet Nicholas Szechenyi of the Center for Strategic and International Studies says Washington's softer approach is not all soft.

VOA: standard.2009.11.10

He concluded that the Republican Party had tricked working people with a relentless propaganda campaign based on religion and morality, while Democrats had abandoned these voters to their economic masters by moving to the soft center of the political spectrum.

NEWYORKER: The Hardest Vote

Murphy, who had three hits for his second straight game, hit a soft line drive to center field that hit off Upton's glove as he came in on it and Buck scored.

WSJ: Braves-Mets suspended, game to resume Saturday

Antonio has a particular soft spot for COCA. The center gave him a scholarship when he was 16, a move that launched his dance career.

CNN: Alvin Ailey principal dancers retire to give back