pinn.别针（大头针）；徽章；<口>脚v.钉住；别住；固定住abbr.个人识别码（=Personal Identification Number）,<印>邮编（=Postal Index Number）pindownn.监禁；限制

1. However,the growth of the Pinus trees is prevailingly constrained by shortage of water.
   但是，由于缺水，油松的生长经常受到严重制约。
2. Experiment on Winter Protection with Medicinal for Annual Seedling of Pinus tabulaeformis Carr.
   一年生油松播种苗药物防寒试验。