Now she must talk her sister through the process a step at a time.
现在她必须向她姐姐详细解释这个过程,一次只说一个步骤。
《柯林斯英汉双解大词典》
2
They are always ready for a mysterious adventure every time they step out their door.
每次他们出门的时候,总是准备好了迎接一场神秘的冒险。
3
Once the call returns for the current timestep, you clear the forces applied to the objects from the last step, and then get the current position and Angle of your dynamic body.