be tired out 疲倦极了
be true to 适用于
be unconscious of 不知道
be unequal to 无法胜任的
be unfit for 不适合,不胜任
be useful to 对有用
be well up in 精通,熟悉
be wild with jay 欣喜
be willing to 乐意
be worried about 为而担心
be worse off 处境较坏,情况恶化
be worth 值得
be wrong with 有点毛病,有些不舒服
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