Experts say the cases show that Japan's border health controls can be easily broken.

专家表示，这些案例表明日本的边境安全控制很容易被打破。

In most of our work, when we were looking at older adults who've got an illness, we always have to have health controls.

在研究的大部分过程中，当我们看到患有疾病的老年人时，我们总是需要进行健康控制。

In most of our work, when we're looking at older adults who've got an illness, we always have to have health controls.

在我们的大部分工作中，当我们观察患有疾病的老年人时，我们总是要进行健康控制。