短语讲解：

1. Parents can think about -- and even argue over -- name choices for months.

think about 考虑…; 捉摸…
例句：I promise not to think about the city.
我保证不再去想城里的事。

2. A few countries ban a number of names for different reasons.

a number of 一些; 许多的
例句：Monkeys are transmitters of a number of dangerous diseases.
猴子是许多危险疾病的传染媒介。

3. That is why names like Legend, Mercy and Serenity are expected to become more popular in the future.

be expected to 被期待做某事; 有望做某事; 期许
例句：I shall be expected to shell out the money for the party.
我将要支付这个集会的费用。