It is helpful to use well-known ideas such as an ambulance siren or a gunshot because these sounds carry a lot of context with them.(使用诸如救护车汽笛或枪身之类众所周知的音效是有帮助的，因为这些声音本身蕴含了环境信息。)
He cleared off when he heard the police siren.(他听到警笛便逃之夭夭。)
Her many lovers also helped create an image of the highly sought-after siren.(她众多的情人也造就了她“君子好逑”的形象。)
I know. It sounds like an ambulance siren.(知道了。听起来象救护车的警笛。)
The noise of the siren was deafening her.(汽笛声震得她耳朵都快聋了。)
The government must resist the siren voices calling for tax cuts.(政府万万不可听信那些鼓吹减税的动听言辞。)
For example, a film-maker might opt to include the background sound of an ambulance's siren while the foreground sound and image portrays an arguing couple.(例如，电影制作人可能会选择在背景中加入救护车的警笛声，而在前景的声音和图像中表现一对争吵的夫妇。)
And the mermaid, or siren, will be freed from her circle.(标志中的美人鱼，或称海神，将会从原来的圆框中脱框而出。)
I heard the siren again, closer.(我再次听到警笛在接近。)
The siren arrives somewhere at the front of the bus.(警笛来到公交车前方的某处。)
