两座城市由一条高速铁路相连,往来十分方便。Liǎng zuò chéngshì yóu yì tiáo gāosù tiělù xiānglián, wǎnglái shífēn fāngbiàn.The two cities are connected by a high-speed railway, making travel between them very convenient.
这两个房间由一扇小门相连。Zhè liǎng ge fángjiān yóu yí shàn xiǎo mén xiānglián.These two rooms are connected by a small door.
大海和天空在远处相连,分不清哪里是边。Dàhǎi hé tiānkōng zài yuǎnchù xiānglián, fēn bù qīng nǎlǐ shì biān.The sea and the sky meet in the distance, and you can't tell where the edge is.