这个标志意思是禁止停车。

Zhè gè biāozhì yìsi shì jìnzhǐ tíngchē.

This sign means parking is not allowed.

你驾驶的时候要留意道路上的交通标志牌。

Nǐ jiàshǐ de shíhou yào liúyì dàolù shàng de jiāotōng biāozhìpái.

When driving you must pay attention the traffic signs on the street.

这项发明标志着科技的进步。

Zhè xiàng fāmíng biāozhì zhe kējì de jìnbù.

This invention indicates the advancement of technology.