inline code of julia produce a new paragraph

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Julia inline code seems to sperate a new paragraph.

How do I union these three paragraph?
It seems not elegant if I must write the paragraph in a single code cell. Because the sytax inside a code cell need additional \.

qmd text:

when $a_2=a_2(0)$ and that when $a_2=0$.

using Markdown
using Unitful
import PhysicalConstants.CODATA2018: ħ, m_e ,e
ω=2pi*300u"MHz"
a20=0.5*m_e*ω^2/e
d=20u"μm"
a3=uconvert(u"V/m^3",2a20/3d)
a4=uconvert(u"V/m^4",3a3/4d)
Markdown.parse("""
With \$d = $(d.val)\\ \\mu \\mathrm{m}\$  and \$\\omega=2\\pi\\times $(ω.val/2pi) \\ \\mathrm{MHz}\$ , we have \$a_3=$(round(a3.val,sigdigits=3))\\ \\mathrm{V/m^3}\$ and \$a_4=$(round(a4.val,sigdigits=3))\\ \\mathrm{V/m^4}\$
""")

Considering 3D potential, $z^2$ is $z^2-\frac{1}{2}\qty(x^2+y^2)$, $z^3$ is