| 单词 | pendulums |
| 例句 | DEFINITIVE EXAMPLES 权威例句Diviners sometimes use pendulums instead of rods or sticks.探测家有时不用棍或棒，而是用摆锤。剑桥国际He made pendulums of string and small weights and established the relationship between length of string and time of swing.他用细绳和小重物制成了摆，建立线长和摆时之间的关系。剑桥国际 |
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