Primaries
n. 基元；主翼羽, 比较原色（primary复数）
🗣️ 情景例句
Choose which you please.
先你中意的好了。
In that case, we might need to reopen the question of prices.
如果是那样，我们也许需要重新讨论价格。
Please push the ladder against the wall.
请把梯子靠在墙壁上。