1. A bridge with big, light-blue loops leads into the business district. 一座带有淡蓝色大环的桥通向商业区。
2. We blasted through face-stretching turns and loops for ninety seconds. 我们进行了90秒的面部拉伸转弯和循环。
3. It is locally convex in the sense that it has no loops and the curvature never changes sign. 它的局部是凸的，因为它没有环路，且曲率永远不会改变符号。
4. If we attend to these areas, a child's success may reinforce itself with positive feedback loops. 如果我们关注这些领域，这些正反馈循环就会巩固孩子的成功。
5. Postulating the effect is one thing; teasing it out from the cobweb of climatic feedback loops and estimating its magnitude is something else altogether. 假设其影响是一码事，在气候反馈循环的蛛丝马迹中对其研究，并评估其重要性则完全是另外一码事。
