Objective To explore the angiographic appearances of the hemodynamic change of spinal dural arteriovenous fistulae (SDAVF).
目的探讨硬脊膜动静脉瘘血液动力学改变的血管造影表现。
Our perspectives, our appearances, our disposition can constantly change. But our core nature generally does not.
我们的观点、外貌和性情不断变化着，但通常情况下我们的核心本质却始终如一。
Its main task is to demonstrate that substance persists in all change of appearances.
它的主要目标是论证实体在现象的变化中持存。
You should not feel obligated to chunk your change into a tip jar but if you are with a client and want to add to a tip jar for the sake of appearances, add a dollar bill, not your spare change.
你不必认为往小费盒里放钱是你的义务。但是当你和客户一起时，为了引起注意，可以放一美元进去，但是不要放零钱进去。
The time may let the human change external appearances only.
时间可以让人改头换面。
He is never afraid of being tripped by a stumbling block. No obstacles will ever make him change his mind. His eyes will never be hoodwinked by false appearances. His actions are guided by faith.
他不怕被绊脚石摔倒，没育一种障碍能使他改变心思，假象绝不能迷住战士的眼睛，支配战士的行动的是信仰。
He is never afraid of being tripped by a stumbling block. No obstacles will ever make him change his mind. His eyes will never be hoodwinked by false appearances. His actions are guided by faith.
他不怕被绊脚石摔倒，没育一种障碍能使他改变心思，假象绝不能迷住战士的眼睛，支配战士的行动的是信仰。
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