The optimal sports items were swimming ping-pong and others but not contractive sports.
但应避免接触性运动，最佳运动有游泳、打乒乓球等。
Serious contractive retinal detachment occurred in those whose postoperative visual acuity was not improved.
术后视力不提高者术前存在严重的牵拉性视网膜脱离。
Where a to-do list is expansive, inclusive and encompassing, a to-don’t list is contractive, narrowing and boundary-defining.
任务清单是可扩展的、有着丰富内涵和围绕的，而选做清单是有收缩性、狭隘和明确界定的。
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