It is crucial that the upper back and neck are held in an erect position to give support for the head.
重要的是：上背和颈部要挺直以支撑头部，这一点很重要。
Police had to erect barriers to keep crowds back.
警察只得设立路障来阻截人群。
The dead marshal jerked spasmodically as the back of his head blew out, but the safety belt kept him erect in the chair.
被打死的警察后脑勺开了花，他的身体还在断断续续地抽搐，却无法挣脱安全带的束缚挺直。
She held her head erect and her back straight.
她昂着头，把背挺得笔直。
Sit up straight, back erect, focus on your breathing.
身体坐直，背部一定要直立，注意力放在呼吸上。
But her back was erect and her head was high as she nodded to them.
不过她的腰背笔直，她向她们点头招呼时脑袋也仍然高昂着。
The chief function of the muscles of the back when one is erect is to resist gravity.
一个站立的人的肩肌的主要功能是抵抗重力。
Keep your posture straight and erect. Your head should be up, your back straight, and shoulders level.
保持您的姿势挺而直，抬起头，挺直腰，双肩水平。
But, you cannot go back. You are the carpenter, and every day you hammer a nail, place a board, or erect a wall.
但是世上没有买后悔药的，你就像是那个木匠，每天，你钉个钉子，置块木板，砌堵墙。
But, you cannot go back. You are the carpenter, and every day you hammer a nail, place a board, or erect a wall.
但是世上没有买后悔药的，你就像是那个木匠，每天，你钉个钉子，置块木板，砌堵墙。
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