1、productive

多产的；高产的

Training makes workers highly productive.

培训提高了工人们的生产力。

More productive farmers have been able to provide cheaper food.

农民提高产量就能使食物更加便宜。

富有成效的；有益的

He was hopeful that the next round of talks would also be productive.

他对下一轮会谈同样富有成效满怀希望。

I was sorry he had left, although I soon developed a productive relationship with his successors.

虽然我很快就和他的继任者建立了良好的关系，但是我仍然对他的离开感到遗憾。

创造…的；生产…的；产生…的

Land, labor and capital are all productive of wealth.

土地、劳动和资本都能创造财富。

2、promise

承诺；保证；答应

The post office has promised to resume first class mail delivery to the area on Friday.

邮局承诺于星期五恢复对这个地区第一类邮件的递送。

He had promised that the rich and privileged would no longer get preferential treatment.

他已经保证富人和特权阶层不会再得到优惠待遇。

答应给予；承诺给予；保证让…得到

In 1920 the great powers promised them an independent state.

1920年，列强承诺让他们成为一个独立的国家。

The officers promise a return to multiparty rule.

这些官员承诺恢复多党统治。

（非常好的或成功的）希望，迹象，指望

The boy first showed promise as an athlete in grade school.

这个男孩在上小学的时候就初次显示出成为运动员的潜力。