我需要一把尺来画直线。
wǒ xūyào yībǎ chǐ lái huà zhíxiàn 。
I need a ruler to draw a straight line.
这尺子有多长?
zhè chǐzi yǒu duō cháng ?
How long is this ruler?
老师用尺给我们量长度。
lǎoshī yòngchǐ gěi wǒmen liáng chángdù 。
The teacher used a ruler to measure the length for us.