1. only add to 只會
The emotional scars from such a separation would only add to an overweight kid's problems, he says.
據他分析，分離造成的情感創傷只會加重孩子的肥胖問題~NW5FUN-XL,6HJm!stmU。

2. a vested interest in 關系到……的既得利益
That gives the U.S. a vested interest in the internal affairs of other countries.
這樣，其他國家的內部事務就關系到了美國的利益]BTtOekAkhg*-lsO)mr。

3. hold together 維系
If South Sudan is to hold together and prosper, it has to overcome many hurdles.
南蘇丹如果要維系團結和繁榮，就要克服許多障礙lw;%TZd42*(+oI。

4. have good reasons to 有充分的理由……
The unions have good reasons not to swerve first.
工會有充分的理由不先于其他方妥協+XHt;YJ^T^enU。