I've had to fend for myself since I was 14.
我从十四岁时起就不得不
自己。
, 
自己自己；抚养I've had to fend for myself since I was 14.
我从十四岁时起就不得不自己。
The old couple have no one to do housework; they have to fend for themselves.
没有人为两位老人做家务; 
们得自己顾自己。
He raised his arm up to fend branches from his eyes.
举手将树枝从眼前档开。
He neatly fended off a jab at his chest.
地挡开了当胸的一击。
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