spare no effort 不遗余力
spar with 与...切磋武艺
main spar 主桅杆
spar deck 横梁甲板
spar gear 帆船索具
1. The boat's mast was broken at the spar.
船的主桅杆在横桁处断了。
2. We need to spare no effort to complete the project on time.
我们必须不遗余力地按时完成这个项目。
3. They went to the dojo to spar with each other.
他们去道馆互相切磋武艺。
A: Did you check the structural integrity of the wooden spars?
A：你检查过那些木梁的结构完整性了吗？
B: Yes, I inspected every spar carefully to ensure safety.
B：是的，我仔细检查了每一根梁以确保安全。
1) 长杆，横桁，桅杆
2) 节省，节约（动词）
3) 练习击打，切磋武艺（动词，多用于拳击或剑术）
1. 长杆，横桁，桅杆
2. 节省，节约
3. 练习击打，切磋武艺
e.g.
Please spare some time for us.
请为我们抽出一些时间。
noun
1. A long, slender piece of wood or metal used as a pole, beam, or spar.
2. A padded weapon or target used in fencing or boxing practice.
verb
1. To keep back; withhold; economize on.
2. To engage in combat or practice fighting with, especially in a non-serious manner.
Synonym: pole, beam, conserve, save, fence