At the gym, of course, a spotter is the trainer who cheers you on, corrects your form, and grabs the barbell in the instant you reach muscle failure but before the weight actually crushes your skull.是什么意思_At the gym, of course, a spotter is the trainer who cheers you on, corrects your form, and grabs the barbell in the instant you reach muscle failure but before the weight actually crushes your skull.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句