four-fourCOCA¹³⁴²⁷³BNC²³⁶²¹³⁺¹ 基本例句 🌏阿四 The four-four line arrangement of single hydraulic supports represents a newly developed roof arrangement based on three- four line and four- five line arrangement. 单体液压支柱四四排管理方法是在三四排、四五排控顶的基础上发展起来的一种新的顶板管理方法。 ilib Four-four was Madame de Genlis's signal. 四下接四下是让利斯夫人的呼号。 tingroom