0 covered with rust -- เป็นสนิม
1 not as good as it was because of lack of practice -- ขาดการฝึกฝน
My French is rusty.
Then, when they have just become rusty in the knowledge which they had previously learned they are returned to specialise in some other subject.
The vehicle was carrying 8,000 fuse heads, 16 times the number that it should have held, in a rusty tin.
One need only look at the rusty investments of the steel industry in the 1970s to have that point underlined.
They are all there: they are just going rusty; they need to be used.
However, other small firms will not be able to use the facilities that are lying, idle and going rusty.
After the tenants had got in, it was discovered that red, rusty water was coming into the house.
He is so rusty that his machine has run down.
I may be a little rusty on these figures.
