Preboarding
织袜纤维热压处理
🗣️ 情景例句
He's had so many colds and sore throats recently.
他最近常常感冒喉咙痛。
He hears the violin squeaking.
他听到了小提琴发出的声音。
since ground stations and satellites cannot see everywhere.
因为地面工作站和卫星不可能看到地球上的每一个地方。