If you are 。。。（aback ）
选择词库级别千万5000英英辞典四级(新大纲)GRE(新大纲)Tofel(新大纲) ★[lactation n. The secretion of milk.]
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aback
aback
If you are taken aback by something, you are surprised or shocked by it and you cannot respond at once.
Roland was taken aback by our strength of feeling.
Derek was taken aback when a man answered the phone.
PHR: usu v-link PHR, oft PHR by n
(c) HarperCollins Publishers.
aboard
aboard
If you are aboard a ship or plane, you are on it or in it.
She invited 750 people aboard the luxury yacht, the Savarona.
They said goodbye to him as he got aboard the train at Union Station.
PREP
= on board
+ aboard
Also an adverb.
It had taken two hours to load all the people aboard.
The United States has a naval task force offshore, with two thousand marines aboard.
ADV: ADV after v
= on board
(c) HarperCollins Publishers.
