Collochemistry
胶体化学
🗣️ 情景例句
Fine. The bill comes to $ 300 even.
好。账单上总共是300元整。
You were lucky to find it.
你的运气真好。
and mechanical systems like a wound watch, or the sun,
像上紧发条的手表那样的机械装置，或太阳，