Definition
to want to have two incompatible things at the same time.
不能兩者兼得
She wants to live in the countryside but still enjoy the conveniences of the city; she really wants to have her cake and eat it too.
她想住在鄉村，但仍想享受城市的便利；她真的想要魚與熊掌兼得。
You can't have your cake and eat it too; it's impossible to not work and still have money to spend.
你不能魚與熊掌兼得；不工作卻還想有錢花是不可能的。
He wants to get promoted in the company but doesn't want to take on more responsibility; he's trying to have his cake and eat it too.
他想在公司升職，但不想承擔更多責任；他試圖魚與熊掌兼得。