前辈好在下又卡关中，请教下面第一句所谓的先行词是[]这一串，还是单看()，第二句先行词是[]、（）还是把<>当主词来看，谢谢帮忙～ 1).The DIN/ISO A2 and DIN/ISO A4 stainless bolts are [two common types of （stainless steel fasteners)] that come in different sizes. 2).<The class depicts [the tensile strength of (the bolt)] > divided by 10. 原文 >>http://www.ehow.co.uk/list_7289795_difference-a2-a4-stainless-bolts.html ※ 编辑: sony807 (110.28.140.148), 07/29/2017 15:52:02