Lesson 2: Balancing and Modifying a Plane
《第二课:平衡和修改平面》

Each student will try to make improvements to their “mini jet” to make it fly better. These changes may include making it smoother (more aerodynamic), stronger and more robust, or improving the overall weighting and balance of the plane.

每个学生都将尝试改进他们的“迷你喷气式飞机”，使其飞得更好。这些变化可能包括使其更平滑(更符合空气动力学)，更坚固，更坚固，或者改善飞机的整体重量和平衡。