Level4·Unit1·Part1·Vocabulary·Pains-and-Sickness【英语流利说·懂你英语】
Headachescanbeverypainfulandcanlastforalongtime.Ifyouhaveaheadache,yourheadhurts.Asprainedanklecanbesopainfulthatyoucan'twalk.Someonewithasprainedanklemayneedtousecrutchestowalk.Ifyouhaveasorethroat,i