Only use firecrackers or fireworks under close supervision.

只能小心使用鞭炮或烟火。

Along with close supervision, having basic swimming skills is important to prevent drowning.

除了密切监督外，掌握基本的游泳技巧也是防止溺水的重要方法。

The prime minister has received some oxygen support, and he's kept under, of course, close supervision.

首相接受了氧气治疗，当然，他一直处于密切监护之中。

Failing a test will not result in a return to prison but could prompt closer supervision or surveillance.

没有通过测试并不意味着要回到监狱，但意味着要受到更强监督或监视。

With close supervision, children can be taught to shoot.

在密切监督之下，孩子也可以学会射击。

It means that there's close regulatory supervision but there's also lots and lots of scope for innovation.

这意味着有严密的监管，但也有很多创新的空间。