Alkyl
n. 烷基, 烴基\\na. 烷基的, 烴基的
??? 情景例句
If you want to make the intelligent choice, Trust me on this.
如果你想作出明知的抉擇，那就相信我吧。
Easier said than done.
說話容易做事難。
if it is really attended by the illumination of another field of interest,
而且的確受到別的領域的情趣的啟迪，