?? 詞語組成解析
n. 靜脈\\n[醫(yī)] 靜脈
??? 情景例句
Aren't you happy with your present occupation?
你對目前的工作不滿意嗎？
Every day is not Sunday.
好景不常在，好花不常開。
Don't you usually come to school by bike?
你不是常騎自行車到學校嗎？