4 sentences

1. 鸵鸟是世界上现存体型最大的鸟类。

   tuó​niǎo shì shì​jiè shàng xiàn​cún tǐ​xíng zuì dà de niǎo​lèi.

   The ostrich is the largest living bird species in the world.

   Source: Dong Chinese Dictionary

2. 这是世界上现存最古老的木结构建筑。

   zhè shì shì​jiè shàng xiàn​cún zuì gǔ​lǎo de mù​jié​gòu jiàn​zhù.

   This is the oldest surviving wooden structure in the world.

   Source: Dong Chinese Dictionary

3. 这样下去，我会是曼哈顿岛上现存最老的童女。

   zhè​yàng xià​qù, wǒ huì shì Màn​hā​dùn dǎo shàng xiàn​cún zuì lǎo de tóng​nǚ.

   At this rate I'll be the oldest living innocent female on the isle of Manhattan.

   Source: OpenSubtitles

4. 这款型号的电脑我们目前没有现存的货源。

   zhè kuǎn xíng​hào de diàn​nǎo wǒ​men mù​qián méi​yǒu xiàn​cún de huò​yuán.

   We don't have any stock of this computer model at the moment.

   Source: Dong Chinese Dictionary