Hái / zi / men / zài / cǎo / dì / shàng / liàn / xí / héng / fān / jīn / dǒu / lǎo / shī / zài / páng / biān / bǎo / hù / tā / men。

孩子们在草地上练习横翻筋斗，老师在旁边保护他们。

The children practiced cartwheels on the grass while the teacher supervised them nearby.