练习怎样抱宝宝，怎样握住她们的头，我们该怎么做呢？
So practice that how do you hold the baby, how do you hold the head, what do we do?
出于这个原因，被避免做充分延长膝关节和股四头肌主动练习。
For that reason, full extension of the knee and active quadriceps exercises were avoided.
它是一部在术后保持股四头肌强壮的非常好的练习机器。
It is a very good exercise machine for keeping your quadriceps strong after surgery.
练习者很可能会在头几次尝试中发出尖锐的声音。
The student is likely to squeak quite a bit during these first few attempts.
这练习帮助你保持四头肌力量。
练习肱三头肌，防止上臂肌肉松弛。
Train Triceps, avoid loose, flabby upper arm. Improve muscle tone.
练习肱三头肌，防止上臂肌肉松弛。
Train Triceps, avoid loose, flabby upper arm. Improve muscle tone.
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