Step size
[计] 步长\\n[化] 步长
🧩 词语组成解析
step
[stɛp]
n. 步，脚步;步骤，手段;步调;级别;
vt.& vi. 举步，行走;踩，踏上;跨入;轻快地走;
vi. 踏，踩;走;
vt. 跳舞;迈步;使成阶梯状;
size
[saɪz]
n. 大小，尺寸;规模;胶料，浆糊;巨大，大量;
vt. 按大小排列;改变…的大小;上胶料，上浆;上涂料;
adj. 一定尺寸的;
🗣️ 情景例句
just half a mile down the road from the Watermill.
从Watermill往下走只要半英哩。
My friend reads and writes several languages.
我的朋友能读并写好多种语言。
it has to develop (partly by means of touch) the ability to judge roughly three-dimensonal distances.
儿童必须发展（部分通过触觉）粗略判断三维空间距离的能力。