Keller is cautious about making predictions for the success of the program.凯勒对该计划是否能够成功作出谨慎的预测。Keller's debut novel is about a Korean woman who was sold into prostitution during World War II.凯勒的处女作写的是一名朝鲜妇女在二战期间被卖作妓女的故事。Keller badly bruised a hip, and came off early in the second half of the match.凯勒严重擦伤了屁股,比赛下半场很早就离场了。