All 435 seats in the U.S.House of Representatives are up for grabs,as are 33 seats in the 100-member Senate.
问题描述：
All 435 seats in the U.S.House of Representatives are up for grabs,as are 33 seats in the 100-member Senate.
答
美国众议院所有的435个席位虚位以待,参议院的100个席位中也有33个空出.
答
美国众议院所有的435席都有待争夺,而参议院的100席中有33席等待争夺