Roberts is the presiding officer of the trial.

罗伯茨是这次审判的主审官。

Twelve hours into his position as presiding officer, Roberts reminded everyone who was in charge.

罗伯茨在当上主审的12小时后提醒大家看看谁才是老大。

The Speaker of the House also serves (or works in a public job) as the presiding officer when the House of Representatives meets.

众议员们在开会的时候，众议院议长还担任（或从事政府的公职）会议的主席。

The interruption came just as the House presiding officer moved to declare a recess.

就在众议院议长宣布休会之际， 会议中断了。