n. 边;优势;(悬崖、峭壁的)边缘,端;锋利,尖锐;
vt. 在…上加边界;使渐进;给(刀刃)磨边,使锋利;修整;
vi. 慢慢向前移动,侧身移动;
🗣️ 情景例句
Did you ever think of photographing an aerobics class?
你想过拍摄有氧运动课吗?
It's no use pumping a dry well.
徒劳无益。
Almost any day a young porpoise may be seen trying to turn a 300-pound sea turtle over by sticking his snout under the edge of his shell and pushing up for dear life.