1.focus on 集中于,集中研究

Many of these funds only focus on longer dated futures contracts.
这些基金很多只关注期限较长的期货合约。

Do entrepreneurs put enough focus on customer relationships?
创业者给予客户关系的重视足够吗？

2.make sure 确保,确信

Finally, make sure you are living your life.
最后，确定正视自己的生活。

And we all had a tasting because we wanted to make sure people felt okay with that.
而且，我们都尝了尝，想确定所有人都满意。

3.require to 要求

Drain piping may require to be protected against freezing.
泄水管要求有防冻保护措施。

These objects require to be quarantined on the spot.
这些物品需要进行现场检疫。

4.relevant to 有关的

Thus far there are three preliminary stories relevant to the brain.
到现在为止有三个与大脑有关的表述。

And anyway, say employers, appearance is often relevant to the job at hand.
但不管怎样，雇主们说，外表经常与手头上的工作有关。