提示：点击例句中的单词，就可以看到词义解释

Some men have had increase in length of up to 2 cm

有的男人确可因此增长2厘米。

Step 1 : hold hard member straight against inches or cm on sides of screen .

第一步：保持硬着放在有英寸或者厘米的屏幕那边。

A giraffe can clean its ears with its 50 cm ( 20 in ) tongue

长颈鹿可用其长达50厘米（20英寸）的舌头清理耳朵。

The smaller one measures 45 cm , is made of rotation molded polyethylene and has 98 holes .

小一点的花瓶有45厘米高，由旋转模聚乙烯制造，有98个孔。

The plants were placed at distances varying from 50 to 300 cm for a period of more than three months .

这些植物被放置到距离这些辐射源50到300厘米远的地方，历时3个月。