wǒ / shōu jí / yóu piào / shí / huì / tè bié / liú yì / yóu piào / de / chǐ kǒng / shì fǒu / wán hǎo

我收集邮票时会特别留意邮票的齿孔是否完好。

When collecting stamps, I pay special attention to whether the perforations are intact.