Methylpurine
[醫(yī)] 甲[基]嘌呤
??? 情景例句
The internet brings people closer from around the world.
因特網(wǎng)把世界上人們的距離拉近了。
Where is gate six?
6號(hào)登機(jī)門(mén)在哪兒？
I was walking home when I met Dave.
我碰到大衛(wèi)時(shí)，我正往家走。