Fea
有限元分析
??? 情景例句
Just listen to the sound.
聽聽這些聲音。
You have to study English, don't you?
你必須學英語，不是嗎？
After that she helped her parents. She quickly cooked the supper, and cleaned the house.
之后她給父母幫忙。她很快煮好了晚餐，并把房子打掃干凈。