`T` must be https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^] from the container (i.e. `allocator_traits` can destroy it).
`T` must be必须可以从容器中 https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^]from the container (i.e.（即 `allocator_traits` can destroy it).可以销毁它）。
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must be必须可以从容器中 https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^]from the container (i.e.（即 `allocator_traits`can destroy it).可以销毁它）。