n.塔西佗(古罗马元老院议员,历史学家)
In desperation I changed tack.
我走投无路,于是改变了策略。
Tack the cord around the cushion.
用粗线沿着垫子边绷一圈。
Tack them together with a 1.5 cm seam.
用1.5厘米的针脚将它们暂时缝上。