If you?want?to ask her out, make sure you’re on her radar first.

radar /?re?dɑ?(r)/ /?re?dɑ?r/

on/off?somebody's/the radar (screen)

（不）受某人關(guān)注的；（不）受關(guān)注的

（if?something is on your?radar, you have?noticed?it and are giving it some?attention；used to say that people’s attention is on or?not on something）

• This is one of the issues?on?our radar.?這是我們所關(guān)注的事件之一。
• The issue of terrorism is back?on the radar screen. 恐怖主義問題重新受人關(guān)注。
• Since the scandal broke, all other issues seem to have?disappeared?off the radar screen?as far as the media is concerned.自丑聞爆發(fā)以來，就媒體而言，所有其他問題似乎已從雷達(dá)屏幕上消失了。
• A career in politics wasn't even?on my radar (screen)?at that point. [=I wasn't thinking at all about a career in politics]那時(shí)從政根本不在我的考慮范圍內(nèi)。

ask sb out

to?invite?someone to come with you to a?place?such as the?cinema?or?a?restaurant,?especially?as a way of?starting?a?romantic relationship

（尤指為了開始與某人建立戀愛關(guān)系）請(qǐng)（某人）外出（或吃飯、看電影等）

• She's?asked?Steve out?to the?cinema?this?evening.她請(qǐng)了史蒂夫今晚出去看電影。
• You should?ask?her out?sometime.你什么時(shí)候應(yīng)該約她出來。