piggybacked
v.
背着，肩驮( piggyback的过去式和过去分词 );
例句:
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He piggybacked her child so she could see the show.
他背着孩子以便于她能够看见影片.
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He swam with them, piggybacked them and attended them.
他带他们游泳, 背他们,还要照料他们.
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Aerobic dancing piggybacked on the jogging craze.
大运动量增氧舞蹈乃是随着慢跑成风的时尚附带产生的.
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Epidemics have piggybacked their way on wars across the world for thousands of years.
来自NEWYORKER