"As welcome as screwworm" nghĩa là gì?

"As welcome as screwworm" = như ấu trùng ruồi -> nghĩa là không được tiếp nhận/hoan nghênh.

Ví dụ

Ultimately it will be the consumer that will have to pay, and for some consumers today was as welcome as screwworm.

A text that interrupts your day with a spam message is as welcome as screwworm, even if you don't have to hear that robotic voice.

Those with AstraZeneca jabs – which are not approved in the United States – would be as welcome as screwworm. It means like those who have not been vaccinated.