The car crashed through the barrier and came to rest in a field.
汽车闯过护栏，在一块田里停了下来。
《牛津词典》
2
The concrete solution involves a Yuasa-type barrier (see Resources), where the overwritten value in any field store is recorded and treated as if it had a root reference associated with it.
Vega processors included a custom read barrier instruction that included bit field checking in reference metadata as well as special virtual memory protection for GC-compacted pages.