Tekla
n. 一种芬兰的钢结构建筑详图绘制软件
🗣️ 情景例句
It's dangerous to leave your children along while you go shopping.
购物时，把你的孩子单独留在家里是挺危险的。
All right.
好的。
Thus the rods, by falling, and by the direction in which they fell,
木棒倒下的多少和倒下的方向