如何在Three.js中构造空心圆柱体

const geometry1 = new THREE.CylinderGeometry(radius1, radius1, height, segments);
const material1 = new THREE.MeshBasicMaterial({color: 0xffffff});
const cylinder1 = new THREE.Mesh(geometry1, material1);
scene.add(cylinder1);

const geometry2 = new THREE.CylinderGeometry(radius2, radius2, height, segments);
const material2 = new THREE.MeshBasicMaterial({color: 0xffffff});
const cylinder2 = new THREE.Mesh(geometry2, material2);
scene.add(cylinder2);

cylinder2.position.set(0, 0, 0.5);

const geometry3 = new THREE.TorusGeometry(radius1, 0.1, 16, 100);
const material3 = new THREE.MeshBasicMaterial({color: 0xffffff});
const torus = new THREE.Mesh(geometry3, material3);
scene.add(torus);

torus.rotation.x = Math.PI / 2;