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buckle down
倾全力, 开始认真从事
例句与用法：
She found it hard to buckle down.
她很难专心做一件事情。
词形变化：
动词过去式: buckled | 动词过去分词: buckled | 动词现在分词: buckling | 动词第三人称单数: buckles |
同义词：
clasp | clip | fasten | catch | hook | strap | wrinkle | distort | bend | belt | deflect | distortion | connection | crumple | secure | collapse | cave in | bulge | fastener | fastening | hasp | warp | heave |
反义词：
unbuckle |
动词 buckle down:
work very hard, like a slave
同义词：slave, break one's back, knuckle down