Metaxylem
n. [植]后生木質部
?? 擴展釋義
【醫】 后生木質部
??? 情景例句
That's a good idea.
好主意。
Watch out, it's dangerous.
注意，危險啊！
Kate! It's late. Why are you in bed?
凱特！晚啦。你怎么還在床上？