present more of a challenge 带来更多的挑战
This could eventually present a challenge for the West, says Bitzinger.
Bitzinger表示,这对于西方来说可能最终是个挑战。
‘Its toxicity could present a challenge for human exploration, ’ he said.
他说:“这些汞的毒性足可以威胁到人类探月工程的开展。”
Mobile devices can present a challenge to users wishing to recall all copies of a message.
移动设备给希望收回消息所有副本的用户提出了挑战。
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