Pentethide
五乙基化物
🗣️ 情景例句
Richard tells me you're a doctor.
Richard告诉我您是医生。
My right arm hurts. It hurts right here.
我的右手臂受伤。 它恰好受伤在这里。
It is our satellite. It is quite near us in space.
它是我们的卫星。它离我们相当近，仅38万公里远。