您要查找的是不是：
- The house roof was (structurally) unsound. 这屋顶(结构)不牢固。
- You need a sharp knife to cut through the knot. 你需用快刀才能把结切断。
- unsound knot 朽节
- Gather them and tie them in a knot. 把它们收集起来打成一个结。
- In my opinion, the scheme is unsound. 依我看，这计划不够妥当。
- Diane and Bill tied the knot yesterday. 丹妮和比尔昨天结婚了。
- I am afraid that it is an unsound investment. 我担心这项投资靠不住。
- That bridge looks unsound to me. 以我看那桥不安全。
- A knob, knot, or other small protuberance. 球形突出物，树瘤球形突出物、节瘤或其它小的突出物
- He tied the two ropes together with a knot. 他打个结把两根绳子系在一起。
- My dead fingers could not untie the knot. 我的手指麻木了，解不开结。
- A knot of friends waved him good-bye. 一群朋友向他挥手告别。
- He was at a loss how to cut the knot. 他不知如何才能大刀阔斧地解决这一难题。
- Now the hawthorn is coming in the knot. 现在山楂就要发芽了。
- A knob, knot, protuberance, or swelling. 节，结，瘤球状物、结、节疤或肿瘤
- The think of undergo a surgical operation tied me in knot. 一想到要动手术，我就紧张起来。
- The roof of the building is unsound. 这幢楼房的屋顶不牢靠。
- The knot was fastened in such a way that it was impossible to undo. 这个结系得那么紧,根本解不开。
- The findings of the research seem unsound. 研究的结果似乎不确.
- Risky or unsound, especially financially. （尤指财政上）冒险的，不可靠的
