Teleteaching
教学电视
🗣️ 情景例句
Do you know anything about South American culture?
你了解南美洲的文化吗？
He who plays with fire gets burned.
玩火者必自焚。
But instruments far more delicate than that were needed if any really serious advance was to be made.
但是，如果要取得真正重大的进展，需要有比这种装置精细得多的仪器。