ph.
1. At the party, the students put him on the spot by asking him to sing.
在宴会中，学生们当场请他出来唱歌，真叫他尴尬。
2. Anyone breaking the rules will be asked to leave on the spot.
任何犯规的人都要立即离场。
1. 现场：现在有些进出口公司(corporation)也不定期的想海外派商业访问团,其中的一个目的就是做现场(on the spot)调查. 当然,面对面的和外商交谈也是一个很重要的获取信息的渠道. 中国出口商品展会(fairs)和其他类似的展会和外商的来访参观,
2. 在场;马上：on the side 作为兼职/副 业 | on the spot 在场;马上 | on the whole 总的来说,大体上
3. 在现场,当场：on the other hand另一方面 | on the spot在现场,当场 | on the whole总的来说,大体上
adv
1. without delay or immediately
e.g. we hired her on the spot
thought they were going to shoot us down on the spot
2. at the place in question
there
e.g. they were on the spot when it happened
it had to be decided by the man on the spot
3. in a difficult situation
e.g. that question really put him on the spot