noun 下载 🔗分享 横桁, 支索桁。 One of two strong bars of timber, fixed horizontally on the opposite sides of the masthead to support the crosstrees and the frame of the top. Examples : "The shipwright carefully inspected the trestletrees at the masthead, ensuring they were strong enough to hold the crosstrees and the weight of the top. " 造船匠仔细检查了桅杆顶端的横桁,确保它们足够坚固,能够支撑起横桅和桅顶平台的重量。 nautical sailing structure part technical 与AI对话词汇游戏阅读练习