1.be able to 能够;能;会
Chantal was lucky to be able to salvage her career.
尚塔尔能保住她的事业算是走了运。
He conjectured that some individuals may be able to detect major calamities.
他猜测说有些人也许能够察觉重大灾难。
2.swear to v.断言
We swear to collect this blood debt.
我们誓死要报这血海深仇!
We have a witness who would swear to it in a court of law.
我们有一位证人愿意在法庭上宣誓作证。