BBC在线收听下载:美国国务卿访问俄罗斯

短语讲解：

1.He is the most senior US official to visit Moscow since President Trump took office.

take office 就职; 任职; 绾结印绶
例句：When will the new President take office?
新总统什么时候就职。

2.The lawyer for Zambia's opposition leader Hakainde Hichilema says he's been detained on suspicion of treason for obstructing the motorcade of the President.

on suspicion of 有嫌疑
例句：He has been questioned on suspicion of slandering the Prime Minister.
他由于涉嫌诽谤首相而受到了盘问。