Melanisms
(melanism 的复数) n. 黑变病\\n[医] 黑变病, 黑素沉着病
🗣️ 情景例句
Do you want manual or automatic transmission?
你的汽车想配备一个手动挡还是自动挡？
Sailboats glided motionlessly across the lake.
帆船静静地像滑动似的在湖上前进。
Many pedal their tricycles, but most of them prefer to push or drag them.
很多孩子用脚蹬车，但多数孩子更愿意推或是拉着三轮车。