Definition
垂直 (chuízhí) means 'to be perpendicular' — forming a 90° angle with a reference line or surface. 直 (zhí) is the broader word for 'straight' in any orientation; 竖 (shù) means 'vertical/upright' like a standing pole but doesn't imply the precision of 垂直.
verb
to be perpendicularto be vertical
Examples
- 垂直。Zhè liǎng tiáo zhíxiàn hùxiāng chuí zhí.These two lines are perpendicular to each other.
- 垂直，。Zhège qiáng bù chuí zhí, xūyào chóngxīn xiū.This wall isn't vertical; it needs to be redone.
- 垂直。Qǐng bǎ huàkuàng guà chuí zhí.Please hang the picture frame straight (vertically).
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