从一开始比分就成拉锯局面.The score had been seesawing from the very start.接着两名赛跑运动员就拉锯似地交替领先.Then the lead went seesaw between the two runners.她正在用一把钝刀拉锯般地切着面包.She was sawing the bread with a blunt knife....
The shirt's cuffs won't sag and lose their shape after washing.这件衬衫的袖口洗后照样挺括，不变形。Keywords: geometric nonlinearity, sag effect, equivalent modulus of elasticity, vehicle - bridge interaction.关键词: 几何非线性 、 中垂效应 、 ...