常見例句Stage 2B: Operculated, traction to retina released. 有蓋的，（玻璃體）對網(wǎng)膜的牽引解除。Stage 3: >=400 microns in diameter, operculated, traction released. 裂孔直徑400微米以上，有蓋，（玻璃體）對網(wǎng)膜的牽引解除。 返回 operculated