Cook made many subsequent attempts to be friendly with the natives, but always without success.
后来库克又做了许多努力，想和土著交朋友，但总是不能成功。
Without her wheelchair, Clara attempts to walk and is gradually successful.
没有了轮椅克拉拉试着练习走路，慢慢得成功了。
She has made several attempts to help them find other rental quarters without success.
她已经试了好几次，想帮她们另找出租房，但都没有成功。
She has made several attempts to help them find other rental quarters without success.
她已经试了好几次，想帮她们另找出租房，但都没有成功。
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