be regarded as
be reluctant to
be referred to as 释义被称为…;
be related to英 [bi: rɪˈleɪtɪd tu:] 美 [bi rɪˈletɪd tu] ...
be relevant to英 [bi: ˈreləvənt tu:] 美 [bi ˈrɛləvənt tu] ...
be reported as[bi: riˈpɔ:tid æz] 释义报道...
be representative of英 [bi: ˌrepriˈzentətiv ɔv] 美 [bi ˌrɛprɪˈzɛntətɪv ʌv]
be remarkable for英 [bi: riˈmɑ:kəbl fɔ:] 美 [bi rɪˈmɑrkəbəl fɔr]
be required to
be resistant to[bi: riˈzistənt tu:] 释...
be responsive to英 [bi: rɪˈspɔnsɪv tu:] 美 [bi rɪˈspɑnsɪv tu]
be rich in英 [bi: ritʃ in] 美 [bi rɪtʃ ɪn] ...
be responsible for英 [bi: riˈspɔnsəbl fɔ:] 美 [bi rɪˈspɑnsəbəl fɔr]
be rid of英 [bi: rid ɔv] 美 [bi rɪd ʌv] ...
be restricted to英 [bi: rɪˈstrɪktɪd tu:] 美 [bi rɪˈstrɪktɪd tu]
be rife with英 [bi: raɪf wið] 美 [bi raɪf wɪð] ...
be rooted in[bi: ˈru:tid in] 释义深植于;
be said to
be right back
be ripe for