dì / di / yì / jǐn / zhāng / jiù / huì / kōu / bí / zi / mā / ma / tí / xǐng / le / tā / hǎo / jǐ / cì

弟弟一紧张就会抠鼻子，妈妈提醒了他好几次。

Whenever my younger brother gets nervous, he picks his nose, and Mom has reminded him several times.