船长：一长声警告附近的船只。

Captain: a long blast to warn the vessels in vicinity.

youdao

给出二长声(用号笛)。

Give two long blasts (on whistle).

youdao

一声又低又长、非常深沉、相当悲惨的叫声传遍了整个沼地。

A long, low cry, very deep and very sad, came over the moor.

youdao

第三声由长降调和短升调组成。

The third tone is a long low tone plus a short rising tone.

youdao

第三声由长降调和短升调组成。

The third tone is a long low tone plus a short rising tone.

youdao