??? 情景例句
the places they visit, and the landmarks.
他們所去的地方， 以及地標(biāo)等等。
While you were writing letters,I was reading a book.
當(dāng)你正在寫信時，我正在讀一本書。
it has to develop (partly by means of touch) the ability to judge roughly three-dimensonal distances.
兒童必須發(fā)展（部分通過觸覺）粗略判斷三維空間距離的能力。