tàn / xiǎn / duì / dài / zhe / zhuān / yè / shè / bèi / xià / dào / le / kuàng / kēng / dǐ / bù / jìn / xíng / kǎo / chá

探险队带着专业设备下到了矿坑底部进行考察。

The exploration team went down to the bottom of the mine with professional equipment for investigation.