这条海底隧道贯通后,港口之间的通勤时间被压缩了一半。Zhè tiáo hǎidǐ suìdào guàntōng hòu, gǎngkǒu zhījiān de tōngqín shíjiān bèi yāsuō le yíbàn.After this undersea tunnel was opened, the commuting time between the ports was cut in half.
火车穿过隧道时,车厢里的灯闪了几下。Huǒchē chuānguò suìdào shí, chēxiāng lǐ de dēng shǎn le jǐ xià.When the train went through the tunnel, the lights in the carriage flickered a few times.
为了保护环境,这段山路从山下的隧道通过。Wèile bǎohù huánjìng, zhè duàn shānlù cóng shānxià de suìdào tōngguò.To protect the environment, this stretch of mountain road passes through a tunnel at the foot of the hill.