Sick and weak as Grandma is, she has taken on all the housework in the family.

祖母虽体弱多病，却承担了家里所有的家务。

youdao

Sharks help maintain the genetic health of the fish populations they feed on by eating the weak, sick and injured. They also keep their prey populations in balance.

通过吃掉老弱病残和受伤者，鲨鱼协助维持其猎物鱼群的基因健康，同时也使其数量保持平衡。

youdao

Sharks help maintain the genetic health of the fish populations they feed on by eating the weak, sick and injured.They also keep their prey populations in balance.

通过吃掉老弱病残和受伤者，鲨鱼协助维持其猎物鱼群的基因健康，同时也使其数量保持平衡。

youdao

"She is very sick and weak," said Sue, "and the disease has left her mind full of strange ideas."

VOA: special.2009.08.01

He knew he was sick and weak.

VOA: special.2009.12.12

The hot steam in the bathroom was making David feel sick and weak.

NEWYORKER: The Swan

Many of them, it was said, had traveled overland, were weak and fell sick easily.

CNN: MALAYSIA

But Tamiflu (oseltamivir) is now powerless against the strain that has been found in people in the community rather than sick patients with serious underlying conditions and weak immune systems.

BBC: Drug-resistant pandemic swine flu 'community risk'