難民キャンプでの死亡の主な原因は栄養不足である。

tbd

The principal cause of death in refugee camps is the lack of nourishment.

過労や栄養不足で彼は重病になった。

tbd

What with overwork and lack of nourishment, he became very ill.

過労やら栄養不足やらで彼は重病になった。

tbd

What with overwork and lack of nourishment, he became very ill.