be full of -- 固定短語，充滿---
整個句子的意思是：人生充滿著挑戰~
challenge英音：['t?lind?]美音：['t?l?nd?]
以下結果由譯典通提供詞典解釋
名詞 n.
1.挑戰;邀請比賽[C][+to-v]
He received a challenge to a TV debate.
他接到電視辯論的挑戰。
2.質疑;指責;異議[C]
3.頗有作為的工作;艱巨的事[C]
To build a road in the mountainous area was a real challenge.
在山區修築公路確是艱巨的事。
He wants a career that offers a challenge.
他要有挑戰性,能有壹番作為的事業。
4.(哨兵,警衛等)查問口令;盤問[C]
I was met with a challenge when approaching the post.
我在走近哨所時被查問身份。
5.律(對某陪審員出庭等表示的)反對[C]
6.有挑戰性[U]
及物動詞 vt.
1.向...挑戰[(+to)][O2]
I challenged him to show his proof.
我要他拿出證據。
2.對...提出異議;懷疑;反對
He challenged my view on that matter.
他就我對那件事的看法提出異議。
3.要求,需要;刺激,激發[O2]
The new position challenged him to study still harder during his spare time.
那個新職位激發他在業余時間更加努力學習。
The event challenges an explanation.
那個事件需要解釋。
4.(哨兵,警衛等)查問;盤問
5.律宣布反對(某陪審員等)