惟一: only; sole; unique 短语和例子惟一出路 the only way out; 惟一的理由 the sole reason; 惟一合法的政府 the sole legitimate government; 惟一可行的办法 the only feasible way; 实践是检验真理的惟一标准。practice is the sole criterion of
关卡: customs pass; an outpost of the tax office; censorship; screening