1.give sb. a call 給某人打電話。也可以說成:give a call to sb.
If you are in trouble, give me a call/give a call to me.
如果你有麻煩,給我打個電話。
2. hound v.追逼; 緊追
She was hounded by the press.
她受到記者的追蹤。
【常用短語】hound sb on 嗾使某人, 煽動某人
3.be aware of 知道……, 意識到……
John has been aware of having done something wrong.
約翰已意識到自己做錯了事情。
4. back out 退出
The bank back out of the contract.
銀行終止該項合同。
5. a piece of work 難事。字面意思“你真是個難題”,引申義指Chris不好應付。