U.s.a.
辅助 Assistant美国
✅ 同义词
🗣️ 情景例句
People who take less exercise seem more vulnerable to illness.
缺少运动的人对疾病的抵抗力就差。
Today is the scholar of yesterday.
今天是昨天的学者。
'We're going back now,' said the conductor.
“我们现在要返回去，”售票员说。