我膝盖弯曲地站在我的指挥官办公司的门外。
I stood outside the office of my commanding officer with my knees buckling.
这些殖民地的植物也需要坚硬有弹性的茎高于土壤，茎可以弯曲很多，但不会断裂，因为水不断闯入他们。
The plants in these colonies also need tough resilient stems above the soil, stems that can bent a lot but not break as water constantly crashes into them.
球确实顺着平滑弯曲的道路，那么为什么击球者有时会看起来如此愚蠢地去摆动它们？
The ball really follows a smooth curved path, so why do batters sometimes look so foolish swinging at them?
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