当寻找制动源时，他们发现“老”成员反对的提案是新成员的两倍。
Looking for blockages, they find that "old" members have opposed proposals twice as often as new ones.
从脑部到脊椎控制动物前肢的神经细胞源开始演化。
The source of the nerve cells that power the animals’ forelimbs shifted, from the brain to the spinal cord.
此安全装置是由气源、气动控制系统和一个气动膨胀式制动器组成。
The device includes air source, control system and a pneumatic expansion brake.
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