Free weights and weight machines are popular strength training tools, but they're not the only options. You can do strength training with inexpensive resistance tubing or even your own body weight.
2
如果使用正确的话，自由负重器械可以比机器更加准确到位。
Free weights, if used correctly, can be more accurate than machines.
3
她们每人既要表演自由体操，还得完成三项器械动作。
They each had to perform on three pieces of equipment as well as the floor.
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