我正在尝试将 y 轴加粗。轴的标题是粗体的，但我似乎不知道如何将数字本身加粗。这是到目前为止我的代码，
combine.df %>% filter(site== "indian_creek") %>%
ggplot(aes(x = percent_corn, y = flow_concentration)) +
geom_smooth(method = "lm", color="black") +
geom_point(color=dark_umber, size=5) +
scale_y_continuous(label=scientific_10, bold) +
scale_x_continuous(breaks = seq(46, 58, by=2)) +
theme(plot.subtitle = element_text(vjust = 1),
plot.caption = element_text(vjust = 1)) +labs(title = "Indian Creek",
face="bold", x = "Cultivated Crop as Corn (%)",
y = expression(bold(Weighted~Flow~NO[3]-N~(kg/m^{3})))) +
theme(
# LABLES APPEARANCE
plot.title = element_text(size=14, face= "bold", colour= "black" ),
axis.title.x = element_text(size=14, face="bold", colour = "black"),
axis.title.y = element_text(size=14, …