上扶梯前，确定应急按钮的位置。该按钮一般是在底层，但有时候也在侧壁台阶旁边。
Take a little time to locate the emergency stop buttons on every escalator before you get on. These may be near the bottom, but sometimes alongside, the stairs.
超声心动图可以清楚地显示室间隔、前壁、侧壁、下壁和后壁的运动。
Supersonic and enchanted the graph can show the room is removed clearly, before the motion of next wall, sidewall, walls and rear wall.
目的探讨左室显影(LVO)对前壁和侧壁心尖段的形态及运动的诊断意义。
Objective To discuss the significance of left ventricular opacification (LVO) for observing the shape and movement of apical anterior and lateral walls.
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